{"id":"CVE-2026-100763","title":"Incorrect boundary conditions in the Graphics: WebGPU component","summary":"Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cwe":["CWE-119"],"vendor":"mozilla","product":"firefox","affected":["firefox < 157.0.0","thunderbird < 157.0"],"patched":["firefox 157.0.0","thunderbird 157.0"],"published":"2026-09-29","updated":"2026-10-13","sourceUpdated":"2026-10-13T18:51:46.687","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100763","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2059929","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-101/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","label":"security@mozilla.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-100763.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-100763"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543168"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100763"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100763"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/#CVE-2026-100763"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00375,"epssPercentile":0.3132,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-01T14:36:38.799871Z"},"ingestedAt":"2026-09-29T13:34:31.654Z","scores":{"nvd":9.1,"vendor":7.5},"slug":"CVE-2026-100763","body":"## Overview\n\nIncorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.\n\n## Affected\n\n- `firefox < 157.0.0`\n- `thunderbird < 157.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 157.0.0`\n- `thunderbird 157.0`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-100763.json)","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":214346,"id":"CVE-2026-100763","ts":1790869745651,"field":"cvss","old":null,"new":"9.1"},{"seq":214345,"id":"CVE-2026-100763","ts":1790869745651,"field":"severity","old":"none","new":"critical"}]}