{"id":"CVE-2026-5402","summary":"Heap-based Buffer Overflow in Wireshark","details":"TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution","modified":"2026-08-12T03:51:20.988686089Z","published":"2026-04-30T05:39:14.217Z","related":["SUSE-SU-2026:3501-1","openSUSE-SU-2026:10686-1"],"database_specific":{"cna_assigner":"GitLab","cwe_ids":["CWE-122"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5402.json"},"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5402.json"},{"type":"WEB","url":"https://www.wireshark.org/security/wnpa-sec-2026-14.html"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-5402"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5402.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5402"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2464038"},{"type":"REPORT","url":"https://gitlab.com/wireshark/wireshark/-/issues/21090"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wireshark/wireshark","events":[{"introduced":"cdfb6721e77c19d43f4787f66e9d5f2525281a22"},{"last_affected":"93282876538d78a2927108dd71ee0ff370aedb0a"}],"database_specific":{"cpe":"cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.6.0"},{"last_affected":"4.6.4"}],"source":"CPE_RANGE"}},{"type":"GIT","repo":"https://gitlab.com/wireshark/wireshark","events":[{"introduced":"cdfb6721e77c19d43f4787f66e9d5f2525281a22"},{"fixed":"b40c46f8386770910317bea2e9187b835502d1b4"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.6.0"},{"fixed":"4.6.5"},{"last_affected":"4.6.4"}]}}],"versions":["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","v4.6.5rc0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5402.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}