CVE-2026-87045

{
  "etk_id": "ETK-2026-3729",
  "cve_id": "CVE-2026-87045",
  "display_id": "CVE-2026-87045",
  "ghsa_id": "GHSA-cw8r-2jj2-w8fw",
  "euvd_id": "EUVD-2026-118272",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Null pointer dereference in Zephyr HTTP/2 server",
  "summary": "Zephyr HTTP/2 server deployments with CONFIG_HTTP_SERVER enabled can be remotely crashed through HTTP/2 header processing. An unauthenticated peer able to connect to the server can cause a denial of service; applications built without the HTTP server are not affected.",
  "mitigation": "Upgrade Zephyr to 4.3.2 or 4.5.0, as appropriate for the maintained release branch. Until upgraded, disable CONFIG_HTTP_SERVER where it is not required or restrict network access to the HTTP/2 service.",
  "vendor": "zephyrproject",
  "product": "zephyr",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.1.0, < 4.3.2"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "4.3.2"
      ],
      "package_name": "zephyr",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.4.0, < 4.5.0"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "4.5.0"
      ],
      "package_name": "zephyr",
      "purl": null
    }
  ],
  "cwes": [
    476
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 40.24464963333333,
  "t0_at": "2026-11-06T14:38:25.629000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-06T14:38:25.629000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-06T14:38:25.629000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-87045"
    }
  }
}