CVE-2025-8034

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

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1970422
https://www.mozilla.org/security/advisories/mfsa2025-56/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-57/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-58/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-59/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-61/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-62/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-63/	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:thunderbird:::::esr:::*
	cpe:2.3:a:mozilla:thunderbird:::::-:::*
	cpe:2.3:a:mozilla:thunderbird:::::esr:::*

History

03 Nov 2025, 20:19

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html -

Information

Published : 2025-07-22 21:15

Updated : 2025-11-03 20:19

NVD link : CVE-2025-8034

Mitre link : CVE-2025-8034

CVE.ORG link : CVE-2025-8034

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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