{"id":"CVE-2026-6776","state":"PUBLISHED","title":"Incorrect boundary conditions in the WebRTC: Networking component","description":"Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.","publishedAt":"2026-04-21T12:41:07.745Z","updatedAt":"2026-05-27T16:56:48.340Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox","Mozilla Thunderbird"],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"140.10","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"150","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.10","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"150","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2021770","https://www.mozilla.org/security/advisories/mfsa2026-30/","https://www.mozilla.org/security/advisories/mfsa2026-32/","https://www.mozilla.org/security/advisories/mfsa2026-33/","https://www.mozilla.org/security/advisories/mfsa2026-34/"],"weaknesses":["CWE-119"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/6xxx/CVE-2026-6776.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-6776","state":"PUBLISHED","datePublished":"2026-04-21T12:41:07.745Z","dateUpdated":"2026-05-27T16:56:48.340Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2026-04-21T12:41:07.296Z"},"containers":{"cna":{"title":"Incorrect boundary conditions in the WebRTC: Networking component","descriptions":[{"lang":"en","value":"Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"140.10","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"150","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.10","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"150","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2021770"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-30/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-32/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-33/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-34/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-04-21T23:35:11.711Z"},"credits":[{"lang":"en","value":"Nan Wang"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-04-21T13:49:53.035013Z","id":"CVE-2026-6776","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T16:56:48.340Z"}}]}}}