NULL Pointer Dereference in Wireshark

{
  "id": "b8944dace1f95b723e9aa962dccf13a88c01c6e48b264f65862cb43a51d48109",
  "url": "https://osv.dev/vulnerability/CVE-2026-6525",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "NULL Pointer Dereference in Wireshark",
    "summary": "IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.4",
    "evidence": "osv:CVE-2026-6525",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-6525",
      "aliases": [
        "CVE-2026-6525"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wireshark/wireshark",
              "type": "GIT",
              "events": [
                {
                  "introduced": "cdfb6721e77c19d43f4787f66e9d5f2525281a22"
                },
                {
                  "fixed": "b40c46f8386770910317bea2e9187b835502d1b4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.6.0"
                      },
                      {
                        "fixed": "4.6.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.6.5rc0",
            "v4.6.4",
            "v4.6.4rc0",
            "v4.6.3",
            "v4.6.3rc0",
            "v4.6.2",
            "v4.6.2rc0",
            "v4.6.1",
            "v4.6.1rc0",
            "v4.6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6525.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/wireshark/wireshark",
              "type": "GIT",
              "events": [
                {
                  "introduced": "cdfb6721e77c19d43f4787f66e9d5f2525281a22"
                },
                {
                  "fixed": "b40c46f8386770910317bea2e9187b835502d1b4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.6.0"
                      },
                      {
                        "fixed": "4.6.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.6.5rc0",
            "v4.6.4",
            "v4.6.4rc0",
            "v4.6.3",
            "v4.6.3rc0",
            "v4.6.2",
            "v4.6.2rc0",
            "v4.6.1",
            "v4.6.1rc0",
            "v4.6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6525.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.198907336Z",
      "provider": "osv",
      "references": [
        "https://gitlab.com/wireshark/wireshark/-/work_items/21008",
        "https://www.wireshark.org/security/wnpa-sec-2026-36.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6525.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-6525"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-476"
        ],
        "cna_assigner": "GitLab",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "4.6.0"
                  },
                  {
                    "fixed": "4.6.5"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6525.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-6525",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492052,
  "published_at": "2026-05-02T11:33:33.147+00:00"
}