CVE-2025-8028

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 141 Firefox ESR versions prior to 115.26 Firefox ESR versions prior to 128.13 Firefox ESR versions prior to 140.1 Thunderbird versions prior to 141 Thunderbird versions prior to 128.13 Thunderbird versions prior to 140.1

Description On arm64 architecture, a WebAssembly (WASM) br table instruction with a large number of entries could result in the label being truncated due to its distance from the instruction. This truncation leads to an incorrect calculation of the branch address.

Recommendations Update Firefox to version 141 or later. Update Firefox ESR to version 115.26 or later. Update Firefox ESR to version 128.13 or later. Update Firefox ESR to version 140.1 or later. Update Thunderbird to version 141 or later. Update Thunderbird to version 128.13 or later. Update Thunderbird to version 140.1 or later.