PT-2026-77021 · Mozilla · Firefox+1
CVE-2026-74988
·
Published
2026-08-18
·
Updated
2026-09-01
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Firefox versions 153 through 153
Firefox ESR version 153.0
Thunderbird versions 153 through 153
Thunderbird ESR version 153.0
Description
Internal bugs were identified that exhibit evidence of memory corruption or other security-relevant defects, which could potentially be exploited.
Recommendations
Update Firefox to version 154.
Update Firefox ESR to version 153.1.
Update Thunderbird to version 154.
Update Thunderbird ESR to version 153.1.
Fix
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Firefox
Thunderbird