{"id":"CVE-2026-76879","title":"Stack-based Buffer Overflow in Wireshark","summary":"C12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-121"],"vendor":"Wireshark Foundation","product":"Wireshark","affected":["Wireshark >= 4.6.0 < 4.6.8","Wireshark >= 4.4.0 < 4.4.18"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-08-20T15:08:32.060760Z"},"published":"2026-08-19","updated":"2026-09-17","sourceUpdated":"2026-09-17T18:44:57.877Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-76879","references":[{"url":"https://www.wireshark.org/security/wnpa-sec-2026-89.html"},{"url":"https://gitlab.com/wireshark/wireshark/-/work_items/21480"}],"tags":["cve.org"],"epss":0.00269,"epssPercentile":0.19258,"ingestedAt":"2026-09-17T19:26:25.344Z","slug":"CVE-2026-76879","body":"## Overview\n\nC12.22 protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service\n\n## Affected\n\n- `Wireshark >= 4.6.0 < 4.6.8`\n- `Wireshark >= 4.4.0 < 4.4.18`\n\n## Remediation\n\nUpgrade to version 4.6.8 or above","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}