CVE-2025-8028 — Improper Handling of Faults that Lead to Instruction Skips in Mozilla Firefox
Severity
9.8CRITICALNVD
EPSS
0.2%
top 60.53%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 22
Latest updateFeb 2
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9
Affected Packages3 packages
🔴Vulnerability Details
3OSV▶
CVE-2025-8028: 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 incorr↗2025-07-22
GHSA▶
GHSA-2fhm-pcv6-vcx9: 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 incorr↗2025-07-22
📋Vendor Advisories
10Debian▶
CVE-2025-8028: firefox - On arm64, a WASM `br_table` instruction with a lot of entries could lead to the ...↗2025