CVE-2026-93857

{
  "etk_id": "ETK-2026-2784",
  "cve_id": "CVE-2026-93857",
  "display_id": "CVE-2026-93857",
  "ghsa_id": "GHSA-cjv7-rv7c-h7c2",
  "euvd_id": "EUVD-2026-111156",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stack buffer overflow in Fireware OS SIP proxy",
  "summary": "Fireware OS is affected by a stack-based buffer overflow in its SIP proxy. A remote unauthenticated attacker could execute code if they can send requests through a policy that uses the SIP proxy.",
  "mitigation": "Upgrade Fireware OS to version 2026.4, 12.12.4, or 12.5.22. Until upgraded, restrict exposure to policies that use the SIP proxy.",
  "vendor": "WatchGuard",
  "product": "Fireware OS",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2025.1, < 2026.4",
        ">= 12.0, < 12.12.4"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "2026.4",
        "12.12.4"
      ],
      "package_name": "Fireware OS",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.0, < 12.5.22"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "12.5.22"
      ],
      "package_name": "Fireware OS",
      "purl": null
    }
  ],
  "cwes": [
    120
  ],
  "cvss_score": 9.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 124.63305465,
  "t0_at": "2026-10-27T15:52:27.970000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-27T15:52:27.970000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T15:52:27.970000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-93857"
    }
  }
}