CVE-2025-8028

CVE Details

Release Date:	2025-07-22
Impact:	Important	What is this?

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

See more information about CVE-2025-8028 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.5
Vector String:	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Version:	3.1
Attack Vector:	Network
Attack Complexity:	High
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (firefox)	ELSA-2025-11797	2025-07-30
Oracle Linux version 10 (thunderbird)	ELSA-2025-12188	2025-07-30
Oracle Linux version 7 (firefox)	ELSA-2025-12278	2025-08-07
Oracle Linux version 8 (firefox)	ELSA-2025-11747	2025-07-24
Oracle Linux version 8 (thunderbird)	ELSA-2025-13676	2025-08-12
Oracle Linux version 9 (firefox)	ELSA-2025-11748	2025-07-24
Oracle Linux version 9 (thunderbird)	ELSA-2025-12187	2025-07-29