CVE-2025-0243

Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. 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 < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.

CVSS v3 5.1 MEDIUM

5.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783	Broken Link Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2025-01/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-02/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-04/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-05/	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html

Configurations

Configuration 1 (hide)

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

History

03 Nov 2025, 23:17

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html -

Information

Published : 2025-01-07 16:15

Updated : 2025-11-03 23:17

NVD link : CVE-2025-0243

Mitre link : CVE-2025-0243

CVE.ORG link : CVE-2025-0243

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-787

Out-of-bounds Write

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