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CWE-476
NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.
CVE-2025-68274 (GCVE-0-2025-68274)
Vulnerability from cvelistv5 – Published: 2025-12-16 22:02 – Updated: 2025-12-17 21:15
VLAI
Title
SIPGO library has response DoS vulnerability via nil pointer dereference
Summary
SIPGO is a library for writing SIP services in the GO language. Starting in version 0.3.0 and prior to version 1.0.0-alpha-1, a nil pointer dereference vulnerability is in the SIPGO library's `NewResponseFromRequest` function that affects all normal SIP operations. The vulnerability allows remote attackers to crash any SIP application by sending a single malformed SIP request without a To header. The vulnerability occurs when SIP message parsing succeeds for a request missing the To header, but the response creation code assumes the To header exists without proper nil checks. This affects routine operations like call setup, authentication, and message handling - not just error cases. This vulnerability affects all SIP applications using the sipgo library, not just specific configurations or edge cases, as long as they make use of the `NewResponseFromRequest` function. Version 1.0.0-alpha-1 contains a patch for the issue.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/emiago/sipgo/security/advisori… | x_refsource_CONFIRM |
| https://github.com/emiago/sipgo/commit/dc9669364a… | x_refsource_MISC |
Impacted products
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CVE-2025-6858 (GCVE-0-2025-6858)
Vulnerability from cvelistv5 – Published: 2025-06-29 11:00 – Updated: 2025-06-30 20:11
VLAI
Title
HDF5 H5Centry.c H5C__flush_single_entry null pointer dereference
Summary
A vulnerability was found in HDF5 1.14.6 and classified as problematic. Affected by this issue is the function H5C__flush_single_entry of the file src/H5Centry.c. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.314330 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.314330 | signaturepermissions-required |
| https://vuldb.com/?submit.602530 | third-party-advisory |
| https://github.com/HDFGroup/hdf5/issues/5576 | issue-tracking |
| https://github.com/user-attachments/files/2062347… | exploit |
Credits
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CVE-2025-68699 (GCVE-0-2025-68699)
Vulnerability from cvelistv5 – Published: 2026-02-04 19:25 – Updated: 2026-02-04 19:51
VLAI
Title
NanoMQ $share/ Subscription Validation and Forwarding Parsing Inconsistency: NULL Pointer Increment Causes Crash
Summary
NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In version 0.24.6, NanoMQ has a protocol parsing / forwarding inconsistency when handling shared subscriptions ($share/). A malformed SUBSCRIBE topic such as $share/ab (missing the second /) is not strictly validated during the subscription stage, so the invalid Topic Filter is stored into the subscription table. Later, when any PUBLISH matches this subscription, the broker send path (nmq_pipe_send_start_v4/v5) performs a second $share/ parsing using strchr() and increments the returned pointer without NULL checks. If the second strchr() returns NULL, sub_topic++ turns the pointer into an invalid address (e.g. 0x1). This invalid pointer is then passed into topic_filtern(), which triggers strlen() and crashes with SIGSEGV. The crash is stable and remotely triggerable. This issue has been patched in version 0.24.7.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/nanomq/nanomq/security/advisor… | x_refsource_CONFIRM |
| https://github.com/nanomq/nanomq/commit/89d68d678… | x_refsource_MISC |
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CVE-2025-69252 (GCVE-0-2025-69252)
Vulnerability from cvelistv5 – Published: 2026-02-23 23:56 – Updated: 2026-02-25 16:21
VLAI
Title
free5GC has Null Pointer Dereference in UDM, Leading to Service Panic
Summary
free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. Versions up to and including 1.4.1 have a NULL Pointer Dereference vulnerability. Remote unauthenticated attackers can trigger a service panic (Denial of Service) by sending a crafted PUT request with an unexpected ueId, crashing the UDM service. All deployments of free5GC using the UDM component may be affected. free5gc/udm pull request 76 contains a fix for the issue. No direct workaround is available at the application level. Applying the official patch is recommended.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/free5gc/free5gc/security/advis… | x_refsource_CONFIRM |
| https://github.com/free5gc/free5gc/issues/752 | x_refsource_MISC |
| https://github.com/free5gc/udm/pull/76 | x_refsource_MISC |
| https://github.com/free5gc/udm/commit/504b14458d1… | x_refsource_MISC |
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CVE-2025-69421 (GCVE-0-2025-69421)
Vulnerability from cvelistv5 – Published: 2026-01-27 16:01 – Updated: 2026-05-12 12:08
VLAI
Title
NULL Pointer Dereference in PKCS12_item_decrypt_d2i_ex function
Summary
Issue summary: Processing a malformed PKCS#12 file can trigger a NULL pointer
dereference in the PKCS12_item_decrypt_d2i_ex() function.
Impact summary: A NULL pointer dereference can trigger a crash which leads to
Denial of Service for an application processing PKCS#12 files.
The PKCS12_item_decrypt_d2i_ex() function does not check whether the oct
parameter is NULL before dereferencing it. When called from
PKCS12_unpack_p7encdata() with a malformed PKCS#12 file, this parameter can
be NULL, causing a crash. The vulnerability is limited to Denial of Service
and cannot be escalated to achieve code execution or memory disclosure.
Exploiting this issue requires an attacker to provide a malformed PKCS#12 file
to an application that processes it. For that reason the issue was assessed as
Low severity according to our Security Policy.
The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue,
as the PKCS#12 implementation is outside the OpenSSL FIPS module boundary.
OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1 and 1.0.2 are vulnerable to this issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSSL | OpenSSL |
Affected:
3.6.0 , < 3.6.1
(semver)
Affected: 3.5.0 , < 3.5.5 (semver) Affected: 3.4.0 , < 3.4.4 (semver) Affected: 3.3.0 , < 3.3.6 (semver) Affected: 3.0.0 , < 3.0.19 (semver) Affected: 1.1.1 , < 1.1.1ze (custom) Affected: 1.0.2 , < 1.0.2zn (custom) |
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
Date Public
2026-01-27 14:00
Credits
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CVE-2025-6966 (GCVE-0-2025-6966)
Vulnerability from cvelistv5 – Published: 2025-12-05 12:59 – Updated: 2025-12-15 22:04
VLAI
Title
Null-pointer dereference in python-apt TagSection.keys()
Summary
NULL pointer dereference in TagSection.keys() in python-apt on APT-based Linux systems allows a local attacker to cause a denial of service (process crash) via a crafted deb822 file with a malformed non-UTF-8 key.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | python-apt |
Affected:
3.0 , < 3.0.0ubuntu1.1
(custom)
Affected: 3.0 , < 3.0.0ubuntu0.25.04.1 (custom) Affected: 2.7 , < 2.7.7ubuntu5.1 (custom) Affected: 2.4 , < 2.4.0ubuntu4.1 (custom) Affected: 2.0 , < 2.0.1ubuntu0.20.04.1+esm1 (custom) Affected: 1.6 , < 1.6.6ubuntu0.1~esm1 (custom) Affected: 1.1 , < 1.1.0~beta1ubuntu0.16.04.12+esm1 (custom) Affected: 0 , < 0.9.3.5ubuntu3+esm5 (custom) |
Date Public
2025-12-05 12:00
Credits
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CVE-2025-7007 (GCVE-0-2025-7007)
Vulnerability from cvelistv5 – Published: 2025-12-01 16:34 – Updated: 2025-12-01 17:08
VLAI
Title
Null pointer dereference in Avast Antivirus on macOS (16.0.0) or Linux (3.0.3)
Summary
NULL Pointer Dereference vulnerability in Avast Antivirus on MacOS, Avast Anitvirus on Linux when scanning a malformed Windows PE file causes the antivirus process to crash.This issue affects Antivirus: 16.0.0; Anitvirus: 3.0.3.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
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CVE-2025-7018 (GCVE-0-2025-7018)
Vulnerability from cvelistv5 – Published: 2026-06-12 22:13 – Updated: 2026-06-15 16:01
VLAI
Title
Avira antivirus engine null pointer dereference when scanning a malformed PE file
Summary
Null pointer dereference vulnerability in Avira Antivirus engine when scanning a malformed Windows PE file may allow Denial-of-Service of the antivirus engine process.
This issue affects Avira Antivirus on Windows, macOS, and Linux for engine builds before 8.3.70.64.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gen Digital | Avira Antivirus |
Affected:
0 , < 8.3.70.64
(custom)
|
Date Public
2025-01-31 11:34
Credits
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CVE-2025-7209 (GCVE-0-2025-7209)
Vulnerability from cvelistv5 – Published: 2025-07-09 01:02 – Updated: 2025-07-09 17:04
VLAI
Title
9fans plan9port x509.c value_decode null pointer dereference
Summary
A vulnerability has been found in 9fans plan9port up to 9da5b44 and classified as problematic. Affected by this vulnerability is the function value_decode in the library src/libsec/port/x509.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The identifier of the patch is deae8939583d83fd798fca97665e0e94656c3ee8. It is recommended to apply a patch to fix this issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.315157 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.315157 | signaturepermissions-required |
| https://vuldb.com/?submit.607685 | third-party-advisory |
| https://github.com/9fans/plan9port/issues/711 | issue-tracking |
| https://github.com/9fans/plan9port/issues/711#iss… | issue-tracking |
| https://github.com/user-attachments/files/1969836… | exploit |
| https://git.9front.org/plan9front/plan9front/deae… | patch |
Credits
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CVE-2025-7462 (GCVE-0-2025-7462)
Vulnerability from cvelistv5 – Published: 2025-07-12 05:32 – Updated: 2025-11-03 17:45
VLAI
Title
Artifex GhostPDL New Output File Open Error gdevpdf.c pdf_ferror null pointer dereference
Summary
A vulnerability was found in Artifex GhostPDL up to 3989415a5b8e99b9d1b87cc9902bde9b7cdea145. It has been classified as problematic. This affects the function pdf_ferror of the file devices/vector/gdevpdf.c of the component New Output File Open Error Handler. The manipulation leads to null pointer dereference. It is possible to initiate the attack remotely. The identifier of the patch is 619a106ba4c4abed95110f84d5efcd7aee38c7cb. It is recommended to apply a patch to fix this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.316113 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.316113 | signaturepermissions-required |
| https://vuldb.com/?submit.610173 | third-party-advisory |
| https://cgit.ghostscript.com/cgi-bin/cgit.cgi/gho… | patch |
| https://artifex.com/ | product |
| https://lists.debian.org/debian-lts-announce/2025… |
Impacted products
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Mitigation ID: MIT-56
Phase: Implementation
Description:
- For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Phase: Requirements
Description:
- Select a programming language that is not susceptible to these issues.
Mitigation
Phase: Implementation
Description:
- Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Phase: Architecture and Design
Description:
- Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Phase: Implementation
Description:
- Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.