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CVE-2025-8028

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published7/22/2025

Last Modified11/3/2025

Sourcenvd

Honeypot Sightings0

Affected Products

mozilla:firefoxmozilla:thunderbird

Weaknesses (CWE)

CWE-1332

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1971581(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-56/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-57/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-58/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-59/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-61/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-62/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-63/(security@mozilla.org)

https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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