CVE-2026-120221

{
  "etk_id": "ETK-2026-4381",
  "cve_id": "CVE-2026-120221",
  "display_id": "CVE-2026-120221",
  "ghsa_id": "GHSA-j25q-23f5-6558",
  "euvd_id": "EUVD-2026-125277",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Double-free denial of service in FRRouting bgpd",
  "summary": "FRRouting bgpd is affected from 8.4 onward when a peer group used for dynamic BGP listen ranges also has a Site-of-Origin setting. Connection loss from an eligible dynamic peer can terminate bgpd and interrupt BGP sessions; TCP-MD5 authentication restricts exposure to peers with the configured key.",
  "mitigation": "Upgrade to the vendor-fixed FRRouting release; the advisory's fixed-version field is `*` and does not provide a concrete version to name. Until the update is deployed, remove Site-of-Origin from peer groups used by BGP listen ranges or disable those dynamic ranges.",
  "vendor": "frrouting",
  "product": "frrouting",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 01da2d26911c72023e71579bf4feeb707087ef50, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "frrouting",
      "purl": null
    }
  ],
  "cwes": [
    415
  ],
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:N/R:A",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 36.85390268333333,
  "t0_at": "2026-11-13T11:54:24.035000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-13T12:55:54.186945+00:00",
      "days": 0.04271009195601852,
      "is_lower_bound": false,
      "measured_at": "2026-11-13T11:54:24.035000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-13T11:54:24.035000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-13T11:54:24.035000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-120221"
    }
  }
}