CVE-2026-33788 (GCVE-0-2026-33788)

Vulnerability from cvelistv5 – Published: 2026-04-09 21:27 – Updated: 2026-04-13 13:04
VLAI
Title
Junos OS Evolved: Local, authenticated attacker can gain privileged access to FPCs
Summary
A Missing Authentication for Critical Function vulnerability in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved on PTX Series allows a local, authenticated attacker with low privileges to gain direct access to FPCs installed in the device. A local user with low privileges can gain direct access to the installed FPCs as a high privileged user, which can potentially lead to a full compromise of the affected component. This issue affects Junos OS Evolved on PTX10004, PTX10008, PTX100016, with JNP10K-LC1201 or JNP10K-LC1202: * All versions before 21.2R3-S8-EVO, * 21.4-EVO versions before 21.4R3-S7-EVO, * 22.2-EVO versions before 22.2R3-S4-EVO, * 22.3-EVO versions before 22.3R3-S3-EVO, * 22.4-EVO versions before 22.4R3-S2-EVO, * 23.2-EVO versions before 23.2R2-EVO.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.5 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
URL Tags
https://kb.juniper.net/JSA107806 vendor-advisory
Impacted products
Vendor Product Version
Juniper Networks Junos OS Evolved Affected: 0 , < 21.2R3-S8-EVO (semver)
Affected: 21.4-EVO , < 21.4R3-S7-EVO (semver)
Affected: 22.2-EVO , < 22.2R3-S4-EVO (semver)
Affected: 22.3-EVO , < 22.3R3-S3-EVO (semver)
Affected: 22.4-EVO , < 22.4R3-S2-EVO (semver)
Affected: 23.2-EVO , < 23.2R2-EVO (semver)
Create a notification for this product.
Date Public
2026-04-08 16:00
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "current_release_date": "2026-04-13T19:23:05+00:00",
      "cve": "CVE-2026-33788",
      "id": "CVE-2026-33788",
      "initial_release_date": "2026-04-08T16:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Junos OS Evolved: Local, authenticated attacker can gain privileged access to FPCs",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33788.json",
      "version": "3"
    },
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\"HIGH\", \"vulnerabilityResponseEffort\": \"MODERATE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS Evolved\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"21.2R3-S8-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.4-EVO\", \"lessThan\": \"21.4R3-S7-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.2-EVO\", \"lessThan\": \"22.2R3-S4-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.3-EVO\", \"lessThan\": \"22.3R3-S3-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.4-EVO\", \"lessThan\": \"22.4R3-S2-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.2-EVO\", \"lessThan\": \"23.2R2-EVO\", \"versionType\": \"semver\"}], \"platforms\": [\"PTX Series\"], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eJuniper SIRT is not aware of any malicious exploitation of this vulnerability.\u003c/p\u003e\", \"base64\": false}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"The following software releases have been updated to resolve this specific issue: 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S2-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"The following software releases have been updated to resolve this specific issue: 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S2-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.\", \"base64\": false}]}], \"datePublic\": \"2026-04-08T16:00:00.000Z\", \"references\": [{\"url\": \"https://kb.juniper.net/JSA107806\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators.\u003cbr\u003e\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-av217\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A Missing Authentication for Critical Function vulnerability in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved on PTX Series allows a local, authenticated attacker with low privileges to gain direct access to FPCs installed in the device.\\n\\nA local user with low privileges can gain direct access to the installed FPCs as a high privileged user, which can potentially lead to a full compromise of the affected component.\\n\\nThis issue affects\\u00a0Junos OS 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PTX10004, PTX10008, PTX100016, with JNP10K-LC1201 or JNP10K-LC1202:\u003cbr\u003e\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before 21.2R3-S8-EVO,\u003c/li\u003e\u003cli\u003e21.4-EVO versions before 21.4R3-S7-EVO,\u003c/li\u003e\u003cli\u003e22.2-EVO versions before 22.2R3-S4-EVO,\u003c/li\u003e\u003cli\u003e22.3-EVO versions before 22.3R3-S3-EVO,\u003c/li\u003e\u003cli\u003e22.4-EVO versions before 22.4R3-S2-EVO,\u003c/li\u003e\u003cli\u003e23.2-EVO versions before 23.2R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-306\", \"description\": \"CWE-306 Missing Authentication for Critical Function\"}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2026-04-09T21:27:44.046Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-33788\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-13T13:04:16.251Z\", \"dateReserved\": \"2026-03-23T19:46:13.671Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2026-04-09T21:27:44.046Z\", \"assignerShortName\": \"juniper\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.