CVE-2025-8028
Large branch table could lead to truncated instruction
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 22, 2025 |
| Last Updated | Apr 13, 2026 |
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Affected Versions
Mozilla / Firefox
All versions affected Mozilla / Thunderbird
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1971581 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-56/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-57/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-58/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-59/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-61/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-62/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-63/ lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html
Credits
Gary Kwong