{"id":"CVE-2026-76921","state":"PUBLISHED","title":"Use After Free in Wireshark","description":"CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service","publishedAt":"2026-08-19T22:45:20.517Z","updatedAt":"2026-08-20T15:26:29.457Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","source":"GitLab"},"assigner":"GitLab","products":["Wireshark Foundation Wireshark"],"affected":[{"vendor":"Wireshark Foundation","product":"Wireshark","defaultStatus":"unaffected","versions":[{"version":"4.6.0","status":"affected","lessThan":"4.6.8","versionType":"semver"},{"version":"4.4.0","status":"affected","lessThan":"4.4.18","versionType":"semver"}]}],"references":["https://www.wireshark.org/security/wnpa-sec-2026-83.html","https://gitlab.com/wireshark/wireshark/-/work_items/21457","https://gitlab.com/wireshark/wireshark/-/work_items/21458"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/76xxx/CVE-2026-76921.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-76921","state":"PUBLISHED","datePublished":"2026-08-19T22:45:20.517Z","dateUpdated":"2026-08-20T15:26:29.457Z","assignerShortName":"GitLab","assignerOrgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateReserved":"2026-08-19T22:44:30.531Z"},"containers":{"cna":{"title":"Use After Free in Wireshark","descriptions":[{"lang":"en","value":"CMS protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service"}],"affected":[{"vendor":"Wireshark Foundation","product":"Wireshark","defaultStatus":"unaffected","versions":[{"version":"4.6.0","status":"affected","lessThan":"4.6.8","versionType":"semver"},{"version":"4.4.0","status":"affected","lessThan":"4.4.18","versionType":"semver"}]}],"references":[{"url":"https://www.wireshark.org/security/wnpa-sec-2026-83.html"},{"url":"https://gitlab.com/wireshark/wireshark/-/work_items/21457"},{"url":"https://gitlab.com/wireshark/wireshark/-/work_items/21458"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","lang":"en","description":"CWE-416: Use After Free","type":"CWE"}]}],"providerMetadata":{"shortName":"GitLab","orgId":"ceab7361-8a18-47b1-92ba-4d7d25f6715a","dateUpdated":"2026-08-19T22:45:20.517Z"},"solutions":[{"lang":"en","value":"Upgrade to version 4.6.8 or above"}],"credits":[{"lang":"en","value":"Aisle Research (Dmitrijs Trizna, Luigino Camastra, Ze Sheng (O2Lab & TAMU), Igor Morgenstern)","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-76921","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-08-20T15:07:10.342098Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-20T15:26:29.457Z"}}]}}}