{"id":"CVE-2025-8028","title":"On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address","summary":"On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address. This vulnerability was fixed in Firefox 141, Fir…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-1332"],"vendor":"mozilla","product":"firefox","affected":["firefox < 115.26.0","firefox < 141.0","firefox >= 128.0, < 128.13.0","firefox >= 140.0, < 140.1.0","thunderbird < 128.13.0","thunderbird < 141.0","thunderbird >= 140.0, < 140.1.0"],"patched":["firefox 140.1.0","thunderbird 140.1.0"],"published":"2025-07-22","updated":"2026-09-30","sourceUpdated":"2026-09-30T18:10:00.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-8028","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1971581","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-56/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-57/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-58/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-59/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-61/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-62/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2025-63/","label":"security@mozilla.org"},{"url":"https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00509,"epssPercentile":0.41193,"ingestedAt":"2026-09-30T18:17:24.447Z","slug":"CVE-2025-8028","body":"## Overview\n\nOn arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.\n\n## Affected\n\n- `firefox < 115.26.0`\n- `firefox < 141.0`\n- `firefox >= 128.0, < 128.13.0`\n- `firefox >= 140.0, < 140.1.0`\n- `thunderbird < 128.13.0`\n- `thunderbird < 141.0`\n- `thunderbird >= 140.0, < 140.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `firefox 140.1.0`\n- `thunderbird 140.1.0`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}