{"id":"CVE-2026-100799","title":"Uninitialized memory in the Graphics: WebGPU component","summary":"Uninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","cwe":["CWE-457"],"vendor":"Mozilla","product":"Firefox","affected":["Firefox"],"published":"2026-09-29","updated":"2026-09-30","sourceUpdated":"2026-09-30T18:18:08.903","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100799","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2056217","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-2026-100799.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-100799"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543135"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100799"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100799"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/#CVE-2026-100799"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00241,"epssPercentile":0.1518,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-29T16:26:15.365568Z"},"ingestedAt":"2026-09-29T13:34:31.669Z","scores":{"nvd":4.3,"vendor":6.1},"slug":"CVE-2026-100799","body":"## Overview\n\nUninitialized memory in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-100799.json)","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212848,"id":"CVE-2026-100799","ts":1790703708400,"field":"cvss","old":null,"new":"4.3"},{"seq":212847,"id":"CVE-2026-100799","ts":1790703708400,"field":"severity","old":"none","new":"medium"}]}