{"id":"CVE-2026-76889","title":"Heap-based Buffer Overflow in Wireshark","summary":"UMTS FP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-122"],"vendor":"Wireshark Foundation","product":"Wireshark","affected":["Wireshark >= 4.6.0 < 4.6.8","Wireshark >= 4.4.0 < 4.4.18"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-08-20T15:08:38.735048Z"},"published":"2026-08-19","updated":"2026-09-17","sourceUpdated":"2026-09-17T18:46:48.139Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-76889","references":[{"url":"https://www.wireshark.org/security/wnpa-sec-2026-66.html"},{"url":"https://gitlab.com/wireshark/wireshark/-/work_items/21413"}],"tags":["cve.org"],"epss":0.00095,"epssPercentile":0.00736,"ingestedAt":"2026-09-17T19:26:25.342Z","slug":"CVE-2026-76889","body":"## Overview\n\nUMTS FP 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":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}