OpenBMC IPMI Privilege Escalation via Retargeted RAKP 1

{
  "id": "9188c788ec298471479125886edb2a934750c6836c4e2b28bd8bad579e679cbc",
  "url": "https://osv.dev/vulnerability/CVE-2026-16140",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "OpenBMC IPMI Privilege Escalation via Retargeted RAKP 1",
    "summary": "OpenBMC's IPMI implementation, phosphor-net-ipmid, is vulnerable to a logic flaw where the authorization context of an existing session can be replaced with a target account while still maintaining the original integrity and encryption keys. Several downstream vendors implement phosphor-net-ipmid as their IPMI stack, such as NVIDIA and H3C. This issue effectively allows for privilege escalation without re-authentication.",
    "evidence": "osv:CVE-2026-16140",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-16140",
      "aliases": [
        "CVE-2026-16140"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openbmc/phosphor-net-ipmid",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16140.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.096854214Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16140.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-16140",
        "https://www.runzero.com/advisories/openbmc-ipmi-privsec-rakp-cve-2026-16140/",
        "https://github.com/openbmc/phosphor-net-ipmid",
        "https://www.runzero.com/blog/lights-out-exposed/"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "runZero",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16140.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-16140",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514143,
  "published_at": "2026-09-15T13:57:19.31+00:00"
}