{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:zeek:zeek:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "8.0.9"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9abee105a8259b65e350d57b68d03c6db00fe3a8"
            },
            {
              "fixed": "c82e3c734893d932e94310aec0dbeb1ffcea169d"
            }
          ],
          "repo": "https://github.com/zeek/zeek",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/60xxx/CVE-2026-60109.json"
  },
  "details": "Zeek before 8.0.9 contains a null pointer dereference vulnerability in its Kerberos protocol analyzer that allows unauthenticated remote attackers to crash the sensor by sending a crafted KRB_ERROR message with error-code 25 (KDC_ERR_PREAUTH_REQUIRED) containing a PA-DATA element with padata-type 2, 3, 11, or 19. Attackers can exploit a parser and analyzer state mismatch where proc_padata() dereferences an uninitialized pa_data_element field selected by the wrong parsing arm, triggering a crash via a single UDP or TCP packet to port 88 without any credentials or prior authentication.",
  "id": "CVE-2026-60109",
  "modified": "2026-07-16T03:31:09.250708523Z",
  "published": "2026-07-09T14:19:17.970Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/60xxx/CVE-2026-60109.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/zeek/zeek/releases/tag/v8.0.9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-60109"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/zeek-null-pointer-dereference-dos-via-kerberos-krb-error-parsing"
    },
    {
      "type": "FIX",
      "url": "https://github.com/zeek/zeek/commit/c82e3c734893d932e94310aec0dbeb1ffcea169d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/zeek/zeek"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Zeek \u003c 8.0.9 Null Pointer Dereference DoS via Kerberos KRB_ERROR Parsing"
}