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 affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.

Related CVEs

CVE-2025-8028

Key Information

GHSA ID

GHSA-2fhm-pcv6-vcx9

Published

July 22, 2025 9:31 PM

Last Modified

July 23, 2025 3:31 PM

CVSS Score

9.0 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: July 26, 2025 6:37 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.