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2368 vulnerabilities by juniper
CVE-2026-57028 (GCVE-0-2026-57028)
Vulnerability from nvd – Published: 2026-07-09 21:08 – Updated: 2026-07-10 14:37
VLAI
EPSS
VEX
Title
Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacker
Summary
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause license exhaustion.
Due to an incorrect initialization, a process which should only be able to communicate internally within the device, can be reached over the network via an open port. This leads to unauthorized access to the license management.
This issue affects all Junos OS Evolved versions before 23.2R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA110088 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-EVO
(custom)
|
Date Public
2026-07-08 16:00
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CVE-2026-33803 (GCVE-0-2026-33803)
Vulnerability from nvd – Published: 2026-07-09 21:04 – Updated: 2026-07-10 13:30
VLAI
EPSS
VEX
Title
Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacker
Summary
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device.
Due to a wrong initialization, a process which should only be able to communicate internally within the device can be reached over the network via an open port. This leads to a device being inadvertently exposed and increased CPU cycles spent processing ingress packets.
This issue affects Junos OS Evolved:
* all versions before 23.2R2-S7-EVO,
* 23.4 versions before 23.4R2-S8-EVO,
* 24.2 versions before 24.2R2-S5-EVO,
* 24.4 versions before 24.4R2-S4-EVO,
* 25.2 versions before 25.2R2-S1-EVO,
* 25.4 versions before 25.4R1-S2-EVO.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA110078 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-S7-EVO
(custom)
Affected: 23.4 , < 23.4R2-S8-EVO (custom) Affected: 24.2 , < 24.2R2-S5-EVO (custom) Affected: 24.4 , < 24.4R2-S4-EVO (custom) Affected: 25.2 , < 25.2R2-S1-EVO (custom) Affected: 25.4 , < 25.4R1-S2-EVO (custom) |
Date Public
2026-07-08 16:00
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CVE-2026-33801 (GCVE-0-2026-33801)
Vulnerability from nvd – Published: 2026-07-09 21:03 – Updated: 2026-07-10 13:31
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: When a specifically malformed BGP route update is received RPD crashes
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker sending a specific BGP update over an established BGP session to cause a Denial-of-Service (DoS).
Upon receipt of a specifically malformed non-inet/inet6 unicast BGP update, an RPD crash and restart is triggered, which will cause a complete service outage until routing has reconverged. The rpd crash occurs before the update can be readvertised, so there is no downstream propagation.
This issue affects:
* Junos OS versions 25.2 before 25.2R2;
* Junos OS Evolved versions 25.2 before 25.2R2-EVO.
This issue doesn't affect Junos OS versions before 25.2R1 nor Junos OS Evolved versions before 25.2R1-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA110076 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
25.2 , < 25.2R2
(custom)
|
|
| Juniper Networks | Junos OS Evolved |
Affected:
25.2 , < 25.2R2-EVO
(custom)
|
Date Public
2026-07-08 16:00
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CVE-2026-33799 (GCVE-0-2026-33799)
Vulnerability from nvd – Published: 2026-07-09 21:02 – Updated: 2026-07-10 13:31
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Receipt of a specific SNMPv3 request results in memory leak and eventual snmpd crash
Summary
An Out-of-bounds Write vulnerability in the SNMP daemon (snmpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated network-based attacker sending specific valid SNMPv3 queries to trigger a memory leak. Over time, continuous receipt of these queries will result in snmpd process memory exhaustion, resulting in a process crash and restart, impacting the ability to monitor the system via SNMP.
Memory usage can be monitored using the following command:
user@device> show system processes extensive | match snmpd
This issue affects:
Junos OS:
* all versions before 21.2R3-S8;
* from 21.4 before 21.4R3-S7;
* from 22.1 before 22.1R3-S6;
* from 22.2 before 22.2R3-S4;
* from 22.3 before 22.3R3-S3;
* from 22.4 before 22.4R3-S2;
* from 23.2 before 23.2R2;
* from 23.4 before 23.4R2.
Junos OS Evolved:
* all versions before 21.2R3-S8-EVO;
* from 21.4 before 21.4R3-S7-EVO;
* all versions of 22.1-EVO,
* from 22.2 before 22.2R3-S4-EVO;
* from 22.3 before 22.3R3-S3-EVO;
* all versions of 22.4-EVO,
* from 23.2 before 23.2R2-EVO;
* from 23.4 before 23.4R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA110074 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 21.2R3-S8
(custom)
Affected: 21.4 , < 21.4R3-S7 (custom) Affected: 22.1 , < 22.1R3-S6 (custom) Affected: 22.2 , < 22.2R3-S4 (custom) Affected: 22.3 , < 22.3R3-S3 (custom) Affected: 22.4 , < 22.4R3-S2 (custom) Affected: 23.2 , < 23.2R2 (custom) Affected: 23.4 , < 23.4R2 (custom) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 21.2R3-S8-EVO
(custom)
Affected: 21.4 , < 21.4R3-S7-EVO (custom) Affected: 22.1 , < 22.1* (custom) Affected: 22.2 , < 22.2R3-S4-EVO (custom) Affected: 22.3 , < 22.3R3-S3-EVO (custom) Affected: 22.4 , < 22.4* (custom) Affected: 23.2 , < 23.2R2-EVO (custom) Affected: 23.4 , < 23.4R2-EVO (custom) |
Date Public
2026-07-08 16:00
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CVE-2026-33797 (GCVE-0-2026-33797)
Vulnerability from nvd – Published: 2026-04-09 21:31 – Updated: 2026-04-23 20:08
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: An attacker sending a specific genuine BGP packet causes a BGP reset
Summary
An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sending a specific genuine BGP packet in an already established BGP session to reset only that session causing a Denial of Service (DoS).
An attacker repeatedly sending the packet will sustain the Denial of Service (DoS).This issue affects Junos OS:
* 25.2 versions before 25.2R2
This issue does not affect Junos OS versions before 25.2R1.
This issue affects Junos OS Evolved:
* 25.2-EVO versions before 25.2R2-EVO
This issue does not affect Junos OS Evolved versions before 25.2R1-EVO.
eBGP and iBGP are affected.
IPv4 and IPv6 are affected.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107850 | vendor-advisory |
| https://supportportal.juniper.net/JSA107850 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
25.2 , < 25.2R2
(semver)
Unaffected: 0 , < 25.2R1 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
25.2 , < 25.2R2-EVO
(semver)
Unaffected: 0 , < 25.2R1-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-33793 (GCVE-0-2026-33793)
Vulnerability from nvd – Published: 2026-04-09 21:24 – Updated: 2026-04-16 15:14
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: When an unsigned Python op script configuration is present, a local low privileged user can compromise the system
Summary
An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system.
When a configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation.
This issue affects Junos OS:
* All versions before 22.4R3-S7,
* from 23.2 before 23.2R2-S4,
* from 23.4 before 23.4R2-S6,
* from 24.2 before 24.2R1-S2, 24.2R2,
* from 24.4 before 24.4R1-S2, 24.4R2;
Junos OS Evolved:
* All versions before 22.4R3-S7-EVO,
* from 23.2 before 23.2R2-S4-EVO,
* from 23.4 before 23.4R2-S6-EVO,
* from 24.2 before 24.2R2-EVO,
* from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-250 - Execution with Unnecessary Privileges
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA103142 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 22.4R3-S7
(semver)
Affected: 23.2 , < 23.2R2-S4 (semver) Affected: 23.4 , < 23.4R2-S6 (semver) Affected: 24.2 , < 24.2R1-S2, 24.2R2 (semver) Affected: 24.4 , < 24.4R1-S2, 24.4R2 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 22.4R3-S7-EVO
(semver)
Affected: 23.2 , < 23.2R2-S4-EVO (semver) Affected: 23.4 , < 23.4R2-S6-EVO (semver) Affected: 24.2 , < 24.2R2-EVO (semver) Affected: 24.4 , < 24.4R1-S1-EVO, 24.4R2-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-33791 (GCVE-0-2026-33791)
Vulnerability from nvd – Published: 2026-04-09 21:38 – Updated: 2026-04-22 14:48
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Execution of crafted CLI commands allows for arbitrary shell injection as root
Summary
An OS Command Injection vulnerability in the CLI processing of Juniper Networks Junos OS and Junos OS Evolved allows a local, high-privileged attacker executing specific, crafted CLI commands to inject arbitrary shell commands as root, leading to a complete compromise of the system.
Certain 'set system' commands, when executed with crafted arguments, are not properly sanitized, allowing for arbitrary shell injection. These shell commands are executed as root, potentially allowing for complete control of the vulnerable system.
This issue affects:
Junos OS:
* all versions before 22.4R3-S8,
* from 23.2 before 23.2R2-S5,
* from 23.4 before 23.4R2-S7,
* from 24.2 before 24.2R2-S2,
* from 24.4 before 24.4R2,
* from 25.2 before 25.2R2;
Junos OS Evolved:
* all versions before 22.4R3-S8-EVO,
* from 23.2 before 23.2R2-S5-EVO,
* from 23.4 before 23.4R2-S7-EVO,
* from 24.2 before 24.2R2-S2-EVO,
* from 24.4 before 24.4R2-EVO,
* from 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107875 | vendor-advisory |
| https://supportportal.juniper.net/JSA107875 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 22.4R3-S8
(semver)
Affected: 23.2 , < 23.2R2-S5 (semver) Affected: 23.4 , < 23.4R2-S7 (semver) Affected: 24.2 , < 24.2R2-S2 (semver) Affected: 24.4 , < 24.4R2 (semver) Affected: 25.2 , < 25.2R2 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 22.4R3-S8-EVO
(semver)
Affected: 23.2 , < 23.2R2-S5-EVO (semver) Affected: 23.4 , < 23.4R2-S7-EVO (semver) Affected: 24.2 , < 24.2R2-S2-EVO (semver) Affected: 24.4 , < 24.4R2-EVO (semver) Affected: 25.2 , < 25.2R1-S1-EVO, 25.2R2-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-33784 (GCVE-0-2026-33784)
Vulnerability from nvd – Published: 2026-04-09 21:36 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
JSI Virtual Lightweight Collector: Default password is not required to be changed which allows unauthorized high-privileged access
Summary
A Use of Default Password vulnerability in the Juniper Networks
Support Insights (JSI)
Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-based attacker to take full control of the device.
vLWC software images ship with an initial password for a high privileged account. A change of this password is not enforced during the provisioning of the software, which can make full access to the system by unauthorized actors possible.This issue affects all versions of vLWC before 3.0.94.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1393 - Use of Default Password
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107871 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | JSI LWC |
Affected:
0 , < 3.0.94
(semver)
|
Date Public
2026-04-08 16:00
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CVE-2026-33780 (GCVE-0-2026-33780)
Vulnerability from nvd – Published: 2026-04-09 21:29 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: In an EVPN-MPLS scenario churn of ESI routes causes a memory leak in l2ald
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a memory leak ultimately leading to a Denial of Service (DoS).
In an EVPN-MPLS scenario, routes learned from remote multi-homed Provider Edge (PE) devices are programmed as ESI routes. Due to a logic issue in the l2ald memory management, memory allocated for these routes is not released when there is churn for these routes. As a result, memory leaks in the l2ald process which will ultimately lead to a crash and restart of l2ald.
Use the following command to monitor the memory consumption by l2ald:
user@device> show system process extensive | match "PID|l2ald"
This issue affects:
Junos OS:
* all versions before 22.4R3-S5,
* 23.2 versions before 23.2R2-S3,
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2;
Junos OS Evolved:
* all versions before 22.4R3-S5-EVO,
* 23.2 versions before 23.2R2-S3-EVO,
* 23.4 versions before 23.4R2-S4-EVO,
* 24.2 versions before 24.2R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107819 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 22.4R3-S5
(semver)
Affected: 23.2 , < 23.2R2-S3 (semver) Affected: 23.4 , < 23.4R2-S4 (semver) Affected: 24.2 , < 24.2R2 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
all version prior to , < 22.4R3-S5-EVO
(semver)
Affected: 23.2 , < 23.2R2-S3-EVO (semver) Affected: 23.4 , < 23.4R2-S4-EVO (semver) Affected: 24.2 , < 24.2R2-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-33776 (GCVE-0-2026-33776)
Vulnerability from nvd – Published: 2026-04-09 21:34 – Updated: 2026-04-10 14:13
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Specific low privileged CLI command exposes sensitive information
Summary
A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a local user with low privileges to read sensitive information.
A local user with low privileges can execute the CLI command 'show mgd' with specific arguments which will expose sensitive information.
This issue affects
Junos OS:
* all versions before 22.4R3-S8,
* 23.2 versions before 23.2R2-S6,
* 23.4 versions before 23.4R2-S6,
* 24.2 versions before 24.2R2-S4,
* 24.4 versions before 24.4R2-S1,
* 25.2 version before 25.2R1-S2, 25.2R2;
Junos OS Evolved:
* all versions before 23.2R2-S6-EVO,
* 23.4 version before 23.4R2-S6-EVO,
* 24.2 version before 24.2R2-S4-EVO,
* 24.4 versions before 24.4R2-S1-EVO,
* 25.2 versions before 25.2R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107866 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 22.4R3-S8
(semver)
Affected: 23.2 , < 23.2R2-S6 (semver) Affected: 23.4 , < 23.4R2-S6 (semver) Affected: 24.2 , < 24.2R2-S4 (semver) Affected: 24.4 , < 24.4R2-S1 (semver) Affected: 25.2 , < 25.2R1-S2, 25.2R2 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-S6-EVO
(semver)
Affected: 23.4 , < 23.4R2-S6-EVO (semver) Affected: 24.2 , < 24.2R2-S4-EVO (semver) Affected: 24.4 , < 24.4R2-S1-EVO (semver) Affected: 25.2 , < 25.2R2-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-33771 (GCVE-0-2026-33771)
Vulnerability from nvd – Published: 2026-04-09 21:33 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
CTP OS: Configuring password requirements does not work which permits the use of weak passwords
Summary
A Weak Password Requirements vulnerability in the password management function of Juniper Networks CTP OS might allow an unauthenticated, network-based attacker to exploit weak passwords of local accounts and potentially take full control of the device.
The password management menu enables the administrator to set password complexity requirements, but these settings are not saved. The issue can be verified with the menu option "Show password requirements". Failure to enforce the intended requirements can lead to weak passwords being used, which significantly increases the likelihood that an attacker can guess these and subsequently attain unauthorized access.
This issue affects CTP OS versions 9.2R1 and 9.2R2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107864 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | CTP OS |
Affected:
9.2R1 , ≤ 9.2R2
(semver)
|
Date Public
2026-04-08 04:00
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CVE-2026-21919 (GCVE-0-2026-21919)
Vulnerability from nvd – Published: 2026-04-09 21:26 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: A high frequency of connecting and disconnecting NETCONF sessions causes management unavailability
Summary
An Incorrect Synchronization vulnerability in the management daemon (mgd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker with low privileges to cause a complete Denial-of-Service (DoS) of the management plane.
When NETCONF sessions are quickly established and disconnected, a locking issue causes mgd processes to hang in an unusable state. When the maximum number of mgd processes has been reached, no new logins are possible. This leads to the inability to manage the device and requires a power-cycle to recover.
This issue can be monitored by checking for mgd processes in lockf state in the output of 'show system processes extensive':
user@host> show system processes extensive | match mgd
<pid> root 20 0 501M 4640K lockf 1 0:01 0.00% mgd
If the system still can be accessed (either via the CLI or as root, which might still be possible as last resort as this won't invoke mgd), mgd processes in this state can be killed with 'request system process terminate <PID>' from the CLI or with 'kill -9 <PID>' from the shell.
This issue affects:
Junos OS:
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2-S1,
* 24.4 versions before 24.4R1-S3, 24.4R2;
This issue does not affect Junos OS versions before 23.4R1;
Junos OS Evolved:
* 23.4 versions before 23.4R2-S5-EVO,
* 24.2 versions before 24.2R2-S1-EVO,
* 24.4 versions before 24.4R1-S3-EVO, 24.4R2-EVO.
This issue does not affect Junos OS Evolved versions before 23.4R1-EVO;
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-821 - Incorrect Synchronization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA106019 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
23.4 , < 23.4R2-S4
(semver)
Affected: 24.2 , < 24.2R2-S1 (semver) Affected: 24.4 , < 24.4R1-S3, 24.4R2 (semver) Unaffected: all version prior to , < 23.4R1 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
23.4 , < 23.4R2-S5-EVO
(semver)
Affected: 24.2 , < 24.2R2-S1-EVO (semver) Affected: 24.4 , < 24.4R1-S3-EVO, 24.4R2-EVO (semver) Unaffected: all version prior to , < 23.4R1-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-21916 (GCVE-0-2026-21916)
Vulnerability from nvd – Published: 2026-04-09 21:28 – Updated: 2026-04-13 13:04
VLAI
EPSS
VEX
Title
Junos OS: A low privileged user can escalate their privileges so that they can login as root
Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in the CLI of Juniper Networks Junos OS allows a local, authenticated attacker with low privileges to escalate their privileges to root which will lead to a complete compromise of the system.
When after a user has performed a specific 'file link ...' CLI operation, another user commits (unrelated configuration changes), the first user can login as root.
This issue affects Junos OS:
* all versions before 23.2R2-S7,
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* 24.2 versions before 24.2R2-S3,
* 24.4 versions before 24.4R2-S2,
* 25.2 versions before 25.2R2.
This issue does not affect versions 25.4R1 or later.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107807 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 23.2R2-S7
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Date Public
2026-04-08 16:00
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CVE-2026-21915 (GCVE-0-2026-21915)
Vulnerability from nvd – Published: 2026-04-09 21:26 – Updated: 2026-04-13 13:04
VLAI
EPSS
VEX
Title
JSI Virtual Lightweight Collector: Shell escape allows privilege escalation to root
Summary
A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a local, high privileged attacker to escalate their privileges to root.
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-183 - Permissive List of Allowed Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA106016 | vendor-advisory |
Impacted products
1 product
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Affected:
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Date Public
2026-04-08 16:00
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CVE-2026-21904 (GCVE-0-2026-21904)
Vulnerability from nvd – Published: 2026-04-09 21:26 – Updated: 2026-04-10 14:14
VLAI
EPSS
VEX
Title
Junos Space: ilpFilter field on nLegacy.jsp is vulnerable to reflected cross-site script injection
Summary
An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Juniper Networks Junos Space allows an attacker to inject script tags in the
list filter field that, when visited by another user, enables the attacker to execute commands with the target's permissions, including an administrator.
This issue affects all versions of Junos Space before 24.1R5 Patch V3.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA106003 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
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| Juniper Networks | Junos Space |
Affected:
0 , < 24.1R5 Patch V3
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Date Public
2026-04-08 16:00
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CVE-2025-13914 (GCVE-0-2025-13914)
Vulnerability from nvd – Published: 2026-04-09 21:32 – Updated: 2026-04-14 14:35
VLAI
EPSS
VEX
Title
Apstra: SSH host key validation vulnerability for managed devices
Summary
A Key Exchange without Entity Authentication vulnerability in the SSH implementation of Juniper Networks Apstra allows a unauthenticated, MITM
attacker to impersonate managed devices.
Due to insufficient SSH host key validation an attacker can perform a machine-in-the-middle attack on the SSH connections from Apstra to managed devices, enabling an attacker to impersonate a managed device and capture user credentials.
This issue affects all versions of Apstra before 6.1.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-322 - Key Exchange without Entity Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107862 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Apstra |
Affected:
0 , < 6.1.1
(semver)
|
Date Public
2026-04-08 10:16
Credits
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CVE-2026-57028 (GCVE-0-2026-57028)
Vulnerability from cvelistv5 – Published: 2026-07-09 21:08 – Updated: 2026-07-10 14:37
VLAI
EPSS
VEX
Title
Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacker
Summary
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause license exhaustion.
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA110088 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
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| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-EVO
(custom)
|
Date Public
2026-07-08 16:00
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CVE-2026-33803 (GCVE-0-2026-33803)
Vulnerability from cvelistv5 – Published: 2026-07-09 21:04 – Updated: 2026-07-10 13:30
VLAI
EPSS
VEX
Title
Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacker
Summary
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device.
Due to a wrong initialization, a process which should only be able to communicate internally within the device can be reached over the network via an open port. This leads to a device being inadvertently exposed and increased CPU cycles spent processing ingress packets.
This issue affects Junos OS Evolved:
* all versions before 23.2R2-S7-EVO,
* 23.4 versions before 23.4R2-S8-EVO,
* 24.2 versions before 24.2R2-S5-EVO,
* 24.4 versions before 24.4R2-S4-EVO,
* 25.2 versions before 25.2R2-S1-EVO,
* 25.4 versions before 25.4R1-S2-EVO.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA110078 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-S7-EVO
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Date Public
2026-07-08 16:00
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CVE-2026-33801 (GCVE-0-2026-33801)
Vulnerability from cvelistv5 – Published: 2026-07-09 21:03 – Updated: 2026-07-10 13:31
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: When a specifically malformed BGP route update is received RPD crashes
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker sending a specific BGP update over an established BGP session to cause a Denial-of-Service (DoS).
Upon receipt of a specifically malformed non-inet/inet6 unicast BGP update, an RPD crash and restart is triggered, which will cause a complete service outage until routing has reconverged. The rpd crash occurs before the update can be readvertised, so there is no downstream propagation.
This issue affects:
* Junos OS versions 25.2 before 25.2R2;
* Junos OS Evolved versions 25.2 before 25.2R2-EVO.
This issue doesn't affect Junos OS versions before 25.2R1 nor Junos OS Evolved versions before 25.2R1-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA110076 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
25.2 , < 25.2R2
(custom)
|
|
| Juniper Networks | Junos OS Evolved |
Affected:
25.2 , < 25.2R2-EVO
(custom)
|
Date Public
2026-07-08 16:00
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CVE-2026-33799 (GCVE-0-2026-33799)
Vulnerability from cvelistv5 – Published: 2026-07-09 21:02 – Updated: 2026-07-10 13:31
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Receipt of a specific SNMPv3 request results in memory leak and eventual snmpd crash
Summary
An Out-of-bounds Write vulnerability in the SNMP daemon (snmpd) of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated network-based attacker sending specific valid SNMPv3 queries to trigger a memory leak. Over time, continuous receipt of these queries will result in snmpd process memory exhaustion, resulting in a process crash and restart, impacting the ability to monitor the system via SNMP.
Memory usage can be monitored using the following command:
user@device> show system processes extensive | match snmpd
This issue affects:
Junos OS:
* all versions before 21.2R3-S8;
* from 21.4 before 21.4R3-S7;
* from 22.1 before 22.1R3-S6;
* from 22.2 before 22.2R3-S4;
* from 22.3 before 22.3R3-S3;
* from 22.4 before 22.4R3-S2;
* from 23.2 before 23.2R2;
* from 23.4 before 23.4R2.
Junos OS Evolved:
* all versions before 21.2R3-S8-EVO;
* from 21.4 before 21.4R3-S7-EVO;
* all versions of 22.1-EVO,
* from 22.2 before 22.2R3-S4-EVO;
* from 22.3 before 22.3R3-S3-EVO;
* all versions of 22.4-EVO,
* from 23.2 before 23.2R2-EVO;
* from 23.4 before 23.4R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA110074 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 21.2R3-S8
(custom)
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|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 21.2R3-S8-EVO
(custom)
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Date Public
2026-07-08 16:00
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CVE-2026-33791 (GCVE-0-2026-33791)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:38 – Updated: 2026-04-22 14:48
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Execution of crafted CLI commands allows for arbitrary shell injection as root
Summary
An OS Command Injection vulnerability in the CLI processing of Juniper Networks Junos OS and Junos OS Evolved allows a local, high-privileged attacker executing specific, crafted CLI commands to inject arbitrary shell commands as root, leading to a complete compromise of the system.
Certain 'set system' commands, when executed with crafted arguments, are not properly sanitized, allowing for arbitrary shell injection. These shell commands are executed as root, potentially allowing for complete control of the vulnerable system.
This issue affects:
Junos OS:
* all versions before 22.4R3-S8,
* from 23.2 before 23.2R2-S5,
* from 23.4 before 23.4R2-S7,
* from 24.2 before 24.2R2-S2,
* from 24.4 before 24.4R2,
* from 25.2 before 25.2R2;
Junos OS Evolved:
* all versions before 22.4R3-S8-EVO,
* from 23.2 before 23.2R2-S5-EVO,
* from 23.4 before 23.4R2-S7-EVO,
* from 24.2 before 24.2R2-S2-EVO,
* from 24.4 before 24.4R2-EVO,
* from 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107875 | vendor-advisory |
| https://supportportal.juniper.net/JSA107875 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 22.4R3-S8
(semver)
Affected: 23.2 , < 23.2R2-S5 (semver) Affected: 23.4 , < 23.4R2-S7 (semver) Affected: 24.2 , < 24.2R2-S2 (semver) Affected: 24.4 , < 24.4R2 (semver) Affected: 25.2 , < 25.2R2 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 22.4R3-S8-EVO
(semver)
Affected: 23.2 , < 23.2R2-S5-EVO (semver) Affected: 23.4 , < 23.4R2-S7-EVO (semver) Affected: 24.2 , < 24.2R2-S2-EVO (semver) Affected: 24.4 , < 24.4R2-EVO (semver) Affected: 25.2 , < 25.2R1-S1-EVO, 25.2R2-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-33784 (GCVE-0-2026-33784)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:36 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
JSI Virtual Lightweight Collector: Default password is not required to be changed which allows unauthorized high-privileged access
Summary
A Use of Default Password vulnerability in the Juniper Networks
Support Insights (JSI)
Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-based attacker to take full control of the device.
vLWC software images ship with an initial password for a high privileged account. A change of this password is not enforced during the provisioning of the software, which can make full access to the system by unauthorized actors possible.This issue affects all versions of vLWC before 3.0.94.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1393 - Use of Default Password
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107871 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | JSI LWC |
Affected:
0 , < 3.0.94
(semver)
|
Date Public
2026-04-08 16:00
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CVE-2026-33776 (GCVE-0-2026-33776)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:34 – Updated: 2026-04-10 14:13
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Specific low privileged CLI command exposes sensitive information
Summary
A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a local user with low privileges to read sensitive information.
A local user with low privileges can execute the CLI command 'show mgd' with specific arguments which will expose sensitive information.
This issue affects
Junos OS:
* all versions before 22.4R3-S8,
* 23.2 versions before 23.2R2-S6,
* 23.4 versions before 23.4R2-S6,
* 24.2 versions before 24.2R2-S4,
* 24.4 versions before 24.4R2-S1,
* 25.2 version before 25.2R1-S2, 25.2R2;
Junos OS Evolved:
* all versions before 23.2R2-S6-EVO,
* 23.4 version before 23.4R2-S6-EVO,
* 24.2 version before 24.2R2-S4-EVO,
* 24.4 versions before 24.4R2-S1-EVO,
* 25.2 versions before 25.2R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107866 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 22.4R3-S8
(semver)
Affected: 23.2 , < 23.2R2-S6 (semver) Affected: 23.4 , < 23.4R2-S6 (semver) Affected: 24.2 , < 24.2R2-S4 (semver) Affected: 24.4 , < 24.4R2-S1 (semver) Affected: 25.2 , < 25.2R1-S2, 25.2R2 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
0 , < 23.2R2-S6-EVO
(semver)
Affected: 23.4 , < 23.4R2-S6-EVO (semver) Affected: 24.2 , < 24.2R2-S4-EVO (semver) Affected: 24.4 , < 24.4R2-S1-EVO (semver) Affected: 25.2 , < 25.2R2-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-33771 (GCVE-0-2026-33771)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:33 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
CTP OS: Configuring password requirements does not work which permits the use of weak passwords
Summary
A Weak Password Requirements vulnerability in the password management function of Juniper Networks CTP OS might allow an unauthenticated, network-based attacker to exploit weak passwords of local accounts and potentially take full control of the device.
The password management menu enables the administrator to set password complexity requirements, but these settings are not saved. The issue can be verified with the menu option "Show password requirements". Failure to enforce the intended requirements can lead to weak passwords being used, which significantly increases the likelihood that an attacker can guess these and subsequently attain unauthorized access.
This issue affects CTP OS versions 9.2R1 and 9.2R2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-521 - Weak Password Requirements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107864 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | CTP OS |
Affected:
9.2R1 , ≤ 9.2R2
(semver)
|
Date Public
2026-04-08 04:00
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CVE-2025-13914 (GCVE-0-2025-13914)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:32 – Updated: 2026-04-14 14:35
VLAI
EPSS
VEX
Title
Apstra: SSH host key validation vulnerability for managed devices
Summary
A Key Exchange without Entity Authentication vulnerability in the SSH implementation of Juniper Networks Apstra allows a unauthenticated, MITM
attacker to impersonate managed devices.
Due to insufficient SSH host key validation an attacker can perform a machine-in-the-middle attack on the SSH connections from Apstra to managed devices, enabling an attacker to impersonate a managed device and capture user credentials.
This issue affects all versions of Apstra before 6.1.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-322 - Key Exchange without Entity Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107862 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Apstra |
Affected:
0 , < 6.1.1
(semver)
|
Date Public
2026-04-08 10:16
Credits
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CVE-2026-33797 (GCVE-0-2026-33797)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:31 – Updated: 2026-04-23 20:08
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: An attacker sending a specific genuine BGP packet causes a BGP reset
Summary
An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sending a specific genuine BGP packet in an already established BGP session to reset only that session causing a Denial of Service (DoS).
An attacker repeatedly sending the packet will sustain the Denial of Service (DoS).This issue affects Junos OS:
* 25.2 versions before 25.2R2
This issue does not affect Junos OS versions before 25.2R1.
This issue affects Junos OS Evolved:
* 25.2-EVO versions before 25.2R2-EVO
This issue does not affect Junos OS Evolved versions before 25.2R1-EVO.
eBGP and iBGP are affected.
IPv4 and IPv6 are affected.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107850 | vendor-advisory |
| https://supportportal.juniper.net/JSA107850 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
25.2 , < 25.2R2
(semver)
Unaffected: 0 , < 25.2R1 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
25.2 , < 25.2R2-EVO
(semver)
Unaffected: 0 , < 25.2R1-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-33780 (GCVE-0-2026-33780)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:29 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: In an EVPN-MPLS scenario churn of ESI routes causes a memory leak in l2ald
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a memory leak ultimately leading to a Denial of Service (DoS).
In an EVPN-MPLS scenario, routes learned from remote multi-homed Provider Edge (PE) devices are programmed as ESI routes. Due to a logic issue in the l2ald memory management, memory allocated for these routes is not released when there is churn for these routes. As a result, memory leaks in the l2ald process which will ultimately lead to a crash and restart of l2ald.
Use the following command to monitor the memory consumption by l2ald:
user@device> show system process extensive | match "PID|l2ald"
This issue affects:
Junos OS:
* all versions before 22.4R3-S5,
* 23.2 versions before 23.2R2-S3,
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2;
Junos OS Evolved:
* all versions before 22.4R3-S5-EVO,
* 23.2 versions before 23.2R2-S3-EVO,
* 23.4 versions before 23.4R2-S4-EVO,
* 24.2 versions before 24.2R2-EVO.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107819 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 22.4R3-S5
(semver)
Affected: 23.2 , < 23.2R2-S3 (semver) Affected: 23.4 , < 23.4R2-S4 (semver) Affected: 24.2 , < 24.2R2 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
all version prior to , < 22.4R3-S5-EVO
(semver)
Affected: 23.2 , < 23.2R2-S3-EVO (semver) Affected: 23.4 , < 23.4R2-S4-EVO (semver) Affected: 24.2 , < 24.2R2-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-21916 (GCVE-0-2026-21916)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:28 – Updated: 2026-04-13 13:04
VLAI
EPSS
VEX
Title
Junos OS: A low privileged user can escalate their privileges so that they can login as root
Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in the CLI of Juniper Networks Junos OS allows a local, authenticated attacker with low privileges to escalate their privileges to root which will lead to a complete compromise of the system.
When after a user has performed a specific 'file link ...' CLI operation, another user commits (unrelated configuration changes), the first user can login as root.
This issue affects Junos OS:
* all versions before 23.2R2-S7,
* 23.4 versions before 23.4R2-S6,
* 24.2 versions before 24.2R2-S3,
* 24.4 versions before 24.4R2-S2,
* 25.2 versions before 25.2R2.
This issue does not affect versions 25.4R1 or later.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA107807 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 23.2R2-S7
(semver)
Affected: 23.4 , < 23.4R2-S6 (semver) Affected: 24.2 , < 24.2R2-S3 (semver) Affected: 24.4 , < 24.4R2-S2 (semver) Affected: 25.2 , < 25.2R2 (semver) Unaffected: 25.4R1 |
Date Public
2026-04-08 16:00
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CVE-2026-21919 (GCVE-0-2026-21919)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:26 – Updated: 2026-04-13 18:06
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: A high frequency of connecting and disconnecting NETCONF sessions causes management unavailability
Summary
An Incorrect Synchronization vulnerability in the management daemon (mgd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker with low privileges to cause a complete Denial-of-Service (DoS) of the management plane.
When NETCONF sessions are quickly established and disconnected, a locking issue causes mgd processes to hang in an unusable state. When the maximum number of mgd processes has been reached, no new logins are possible. This leads to the inability to manage the device and requires a power-cycle to recover.
This issue can be monitored by checking for mgd processes in lockf state in the output of 'show system processes extensive':
user@host> show system processes extensive | match mgd
<pid> root 20 0 501M 4640K lockf 1 0:01 0.00% mgd
If the system still can be accessed (either via the CLI or as root, which might still be possible as last resort as this won't invoke mgd), mgd processes in this state can be killed with 'request system process terminate <PID>' from the CLI or with 'kill -9 <PID>' from the shell.
This issue affects:
Junos OS:
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2-S1,
* 24.4 versions before 24.4R1-S3, 24.4R2;
This issue does not affect Junos OS versions before 23.4R1;
Junos OS Evolved:
* 23.4 versions before 23.4R2-S5-EVO,
* 24.2 versions before 24.2R2-S1-EVO,
* 24.4 versions before 24.4R1-S3-EVO, 24.4R2-EVO.
This issue does not affect Junos OS Evolved versions before 23.4R1-EVO;
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-821 - Incorrect Synchronization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA106019 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
23.4 , < 23.4R2-S4
(semver)
Affected: 24.2 , < 24.2R2-S1 (semver) Affected: 24.4 , < 24.4R1-S3, 24.4R2 (semver) Unaffected: all version prior to , < 23.4R1 (semver) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
23.4 , < 23.4R2-S5-EVO
(semver)
Affected: 24.2 , < 24.2R2-S1-EVO (semver) Affected: 24.4 , < 24.4R1-S3-EVO, 24.4R2-EVO (semver) Unaffected: all version prior to , < 23.4R1-EVO (semver) |
Date Public
2026-04-08 16:00
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CVE-2026-21915 (GCVE-0-2026-21915)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:26 – Updated: 2026-04-13 13:04
VLAI
EPSS
VEX
Title
JSI Virtual Lightweight Collector: Shell escape allows privilege escalation to root
Summary
A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a local, high privileged attacker to escalate their privileges to root.
The CLI menu accepts input without carefully validating it, which allows for shell command injection. These shell commands are executed with root permissions and can be used to gain complete control of the system.
This issue affects all JSI vLWC versions before 3.0.94.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-183 - Permissive List of Allowed Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA106016 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | JSI LWC |
Affected:
0 , < 3.0.94
(semver)
|
Date Public
2026-04-08 16:00
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