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HIGH

Memory safety bugs fixed in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141

Published Jul 22, 2025

Description

Memory safety bugs present in Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird ESR 128.12, Firefox ESR 140.0, Thunderbird ESR 140.0, Firefox 140 and Thunderbird 140. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.

Affected products

Remediation

Red Hat statement

Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.

Weaknesses (1)

CWE-119

Buffer Overflow

References (15)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mozilla
Published Jul 22, 2025
Updated Apr 13, 2026
Reserved Jul 22, 2025
Link CVE-2025-8034
CISA Vulnrichment
Updated Jul 24, 2025
NVD
Status Modified
Modified Oct 5, 2026
Link CVE-2025-8034
Red Hat
Severity Important
Public date Jul 22, 2025
Links CVE-2025-8034 - Bugzilla
ENISA EUVD
Assigner n/a
Published n/a
Updated n/a
Exploited since n/a
Link n/a