GHSA-QR7G-RJ69-5948

Vulnerability from github – Published: 2026-04-10 00:30 – Updated: 2026-04-10 00:30
VLAI?
Details

A Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in the advanced forwarding toolkit (evo-aftmand/evo-pfemand) of Juniper Networks Junos OS Evolved on PTX Series or QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).An attacker sending crafted multicast packets will cause line cards running evo-aftmand/evo-pfemand to crash and restart or non-line card devices to crash and restart. Continued receipt and processing of these packets will sustain the Denial of Service (DoS) condition.

This issue affects Junos OS Evolved PTX Series:

  • All versions before 22.4R3-S8-EVO,
  • from 23.2 before 23.2R2-S5-EVO,
  • from 23.4 before 23.4R2-EVO,
  • from 24.2 before 24.2R2-EVO,
  • from 24.4 before 24.4R2-EVO.

This issue affects Junos OS Evolved on QFX5000 Series:

  • 22.2-EVO version before 22.2R3-S7-EVO,
  • 22.4-EVO version before 22.4R3-S7-EVO,
  • 23.2-EVO versions before 23.2R2-S4-EVO,
  • 23.4-EVO versions before 23.4R2-S5-EVO,
  • 24.2-EVO versions before 24.2R2-S1-EVO,
  • 24.4-EVO versions before 24.4R1-S3-EVO, 24.4R2-EVO.

This issue does not affect Junos OS Evolved on QFX5000 Series versions before: 21.2R2-S1-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-EVO, and 22.1R1-EVO.

Severity ?
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/V:C/RE:M/U:Amber
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{
  "affected": [],
  "aliases": [
    "CVE-2025-59969"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-09T22:16:24Z",
    "severity": "HIGH"
  },
  "details": "A Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027) vulnerability in the advanced forwarding toolkit (evo-aftmand/evo-pfemand) of Juniper Networks Junos OS Evolved on PTX Series or QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).An attacker sending crafted multicast packets will cause line cards running evo-aftmand/evo-pfemand to crash and restart or non-line card devices to crash and restart.\u00a0Continued receipt and processing of these packets will sustain the Denial of Service (DoS) condition.\n\nThis issue affects Junos OS Evolved PTX Series:\n\n\n\n  *  All versions before 22.4R3-S8-EVO,\n  *  from 23.2 before 23.2R2-S5-EVO,\n  *  from 23.4 before 23.4R2-EVO,\n  *  from 24.2 before 24.2R2-EVO,\n  *  from 24.4 before\u00a024.4R2-EVO.\n\n\n\n\nThis issue affects Junos OS Evolved on QFX5000 Series:\n\n\n\n  *  22.2-EVO version before 22.2R3-S7-EVO,\n  *  22.4-EVO version before 22.4R3-S7-EVO,\n  *  23.2-EVO versions before 23.2R2-S4-EVO,\n  *  23.4-EVO versions before 23.4R2-S5-EVO, \n  *  24.2-EVO versions before 24.2R2-S1-EVO,\n  *  24.4-EVO versions before 24.4R1-S3-EVO, 24.4R2-EVO.\n\n\nThis issue does not affect Junos OS Evolved on QFX5000 Series versions before: 21.2R2-S1-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-EVO, and 22.1R1-EVO.",
  "id": "GHSA-qr7g-rj69-5948",
  "modified": "2026-04-10T00:30:29Z",
  "published": "2026-04-10T00:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-59969"
    },
    {
      "type": "WEB",
      "url": "https://kb.juniper.net/JSA103159"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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:Y/R:U/V:C/RE:M/U:Amber",
      "type": "CVSS_V4"
    }
  ]
}


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