GHSA-JWV5-XMF5-MP56

Vulnerability from github – Published: 2025-03-12 15:32 – Updated: 2025-10-22 00:33
VLAI?
Details

An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device.

A local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device. This issue is not exploitable from the Junos CLI. This issue affects Junos OS: 

  • All versions before 21.2R3-S9,
  • 21.4 versions before 21.4R3-S10, 
  • 22.2 versions before 22.2R3-S6, 
  • 22.4 versions before 22.4R3-S6, 
  • 23.2 versions before 23.2R2-S3, 
  • 23.4 versions before 23.4R2-S4,
  • 24.2 versions before 24.2R1-S2, 24.2R2.
Severity ?
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
6.7 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [],
  "aliases": [
    "CVE-2025-21590"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-653"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-12T14:15:15Z",
    "severity": "MODERATE"
  },
  "details": "An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device.\n\nA local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device.\nThis issue is not exploitable from the Junos CLI.\nThis issue affects Junos OS:\u00a0\n\n\n\n  *  All versions before 21.2R3-S9,\n  *  21.4 versions before 21.4R3-S10,\u00a0\n  *  22.2 versions before 22.2R3-S6,\u00a0\n  *  22.4 versions before 22.4R3-S6,\u00a0\n  *  23.2 versions before 23.2R2-S3,\u00a0\n  *  23.4 versions before 23.4R2-S4,\n  *  24.2 versions before 24.2R1-S2, 24.2R2.",
  "id": "GHSA-jwv5-xmf5-mp56",
  "modified": "2025-10-22T00:33:16Z",
  "published": "2025-03-12T15:32:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21590"
    },
    {
      "type": "WEB",
      "url": "https://cloud.google.com/blog/topics/threat-intelligence/china-nexus-espionage-targets-juniper-routers"
    },
    {
      "type": "WEB",
      "url": "https://supportportal.juniper.net/JSA93446"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21590"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.