{"id":"CVE-2025-4082","title":"Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges.\n*This bug only affects Thunderbird for macOS","summary":"Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges.\n*This bug only affects Thunderbird for macOS. Other versions of T…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-125"],"vendor":"mozilla","product":"firefox","affected":["firefox < 115.23","firefox < 138.0","firefox >= 128.0, < 128.10","thunderbird < 128.10.0","thunderbird < 138.0"],"patched":["firefox 128.10","thunderbird 138.0"],"published":"2025-04-29","updated":"2026-09-30","sourceUpdated":"2026-09-30T18:10:00.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-4082","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1937097","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-28/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-29/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-30/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-31/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-32/","label":"security@mozilla.org"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00452,"epssPercentile":0.36872,"ingestedAt":"2026-09-30T18:17:24.433Z","slug":"CVE-2025-4082","body":"## Overview\n\nModification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges.\n*This bug only affects Thunderbird for macOS. Other versions of Thunderbird are unaffected.*. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.\n\n## Affected\n\n- `firefox < 115.23`\n- `firefox < 138.0`\n- `firefox >= 128.0, < 128.10`\n- `thunderbird < 128.10.0`\n- `thunderbird < 138.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 128.10`\n- `thunderbird 138.0`","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}