CVE-2025-8028
CRITICAL severity · CVSS 9.8 · CWE-1332
9.8CVSS CRITICAL
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, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2025-56/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-57/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-58/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-59/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-61/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-62/Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-63/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1971581