{"id":"CVE-2026-96423","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-96423","summary":"Heap-based Buffer Overflow in Wireshark","details":"X11 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service","published":"2026-09-29T09:30:38.019Z","modified":"2026-10-01T03:47:38.247169921Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://gitlab.com/wireshark/wireshark/-/work_items/21563"},{"type":"WEB","url":"https://www.wireshark.org/security/wnpa-sec-2026-108.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/96xxx/CVE-2026-96423.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96423"},{"type":"PACKAGE","url":"https://gitlab.com/wireshark/wireshark"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-01T03:47:38.247169921Z"}}