{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.0.0"
              },
              {
                "fixed": "2.0.2"
              },
              {
                "fixed": "2.0.1"
              },
              {
                "introduced": "2.1.0"
              },
              {
                "fixed": "2.1.1"
              }
            ],
            "source": "DESCRIPTION"
          },
          "events": [
            {
              "introduced": "62c8009df12bb5e6d63479e82b8335aaa8ba84c6"
            },
            {
              "fixed": "473ae25561881ab9eca8b84e0ea14e43d18e1993"
            },
            {
              "fixed": "3824083e4632ecbdff50aa2e723e89fa42d9dcf6"
            },
            {
              "introduced": "a72a76f234d9f7069ddd1e8b8ebef30a9c3fa326"
            },
            {
              "fixed": "510a23adbc911e8e72708799daba964ec045ef25"
            }
          ],
          "repo": "https://github.com/chipsalliance/caliptra-sw",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hw68-jjx4-m376"
  ],
  "database_specific": {
    "cna_assigner": "Caliptra",
    "cwe_ids": [
      "CWE-345"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/11xxx/CVE-2026-11836.json"
  },
  "details": "Insufficient verification of data authenticity in Caliptra Core ROM and Core Firmware (validate_debug_unlock_token()) in subsystem mode allows an attacker with access to the integrator's debug unlock signing service to unlock production debug on an unintended device by presenting a valid token issued for a different device sharing the same debug unlock key hash. The 384-bit challenge nonce continues to prevent replay of previously issued tokens. Practical impact is limited to loss of per-device scope enforcement within a set of devices that share the same unlock authority by design; it does not enable debug unlock on devices outside that set.\n\nThis issue affects Core ROM: 2.0.0 through 2.0.2, 2.1.0 through 2.1.1; Core Firmware: 2.0.0 through 2.0.1, 2.1.0.",
  "id": "CVE-2026-11836",
  "modified": "2026-08-07T11:30:59.010401597Z",
  "published": "2026-08-04T00:02:34.093Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/11xxx/CVE-2026-11836.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-hw68-jjx4-m376"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11836"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/chipsalliance/caliptra-sw"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Production Debug-Unlock Token Verification Missing Device Binding"
}