CVE-2025-5269

Memory safety bug present in Firefox ESR 128.10, and Thunderbird 128.10. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 128.11 and Thunderbird < 128.11.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

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/show_bug.cgi?id=1924108	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-44/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-46/

Configurations

Configuration 1 (hide)

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

History

11 Jun 2025, 12:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-05-27 13:15

Updated : 2025-06-11 12:15

NVD link : CVE-2025-5269

Mitre link : CVE-2025-5269

CVE.ORG link : CVE-2025-5269

JSON object : View

Products Affected

mozilla

firefox
thunderbird

CWE

CWE-787

Out-of-bounds Write

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