PT-2026-77017 · Mozilla · Firefox+2

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CVE-2026-74984

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Published

2026-08-18

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Updated

2026-08-31

CVSS v3.1

6.8

Medium

VectorAV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Name of the Vulnerable Software and Affected Versions Firefox versions prior to 154 Firefox ESR versions prior to 153.1 Thunderbird versions prior to 154 Thunderbird versions prior to 153.1
Description A race condition exists in the JavaScript Engine component. A race condition is a situation where the system's substantive behavior is dependent on the sequence or timing of other uncontrollable events.
Recommendations Update Firefox to version 154. Update Firefox ESR to version 153.1. Update Thunderbird to version 154. Update Thunderbird to version 153.1.

Fix

Race Condition

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Weakness Enumeration

Related Identifiers

CVE-2026-74984
OPENSUSE-SU-2026:11546-1
OPENSUSE-SU-2026:11580-1
OPENSUSE-SU-2026:21713-1
SUSE-SU-2026:23411-1
SUSE-SU-2026:3658-1
SUSE-SU-2026:3683-1

Affected Products

Firefox
Firefox Esr
Thunderbird