CVE-2025-4092

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-4092
Memory safety bugs present in Firefox 137 and Thunderbird 137. 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 138 and Thunderbird 138.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

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/buglist.cgi?bug_id=1924108%2C1950780%2C1959367 Broken Link
https://www.mozilla.org/security/advisories/mfsa2025-28/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-31/ Vendor Advisory
Configurations

Configuration 1 (hide)

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

13 Apr 2026, 15:17

Type Values Removed Values Added
Summary (en) Memory safety bugs present in Firefox 137 and Thunderbird 137. 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 < 138 and Thunderbird < 138. (en) Memory safety bugs present in Firefox 137 and Thunderbird 137. 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 138 and Thunderbird 138.

09 May 2025, 19:32

Type Values Removed Values Added
References () https://bugzilla.mozilla.org/buglist.cgi?bug_id=1924108%2C1950780%2C1959367 - () https://bugzilla.mozilla.org/buglist.cgi?bug_id=1924108%2C1950780%2C1959367 - Broken Link
References () https://www.mozilla.org/security/advisories/mfsa2025-28/ - () https://www.mozilla.org/security/advisories/mfsa2025-28/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-31/ - () https://www.mozilla.org/security/advisories/mfsa2025-31/ - Vendor Advisory
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
First Time Mozilla firefox
Mozilla thunderbird
Mozilla

02 May 2025, 13:53

Type Values Removed Values Added
Summary
  • (es) Errores de seguridad de memoria presentes en Firefox 137 y Thunderbird 137. Algunos de estos errores mostraron evidencia de corrupción de memoria y presumimos que, con el esfuerzo suficiente, algunos de ellos podrían haberse explotado para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox 138 y Thunderbird 138.

29 Apr 2025, 16:15

Type Values Removed Values Added
CWE CWE-119
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.5

29 Apr 2025, 14:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-29 14:15

Updated : 2026-04-13 15:17

NVD link : CVE-2025-4092

Mitre link : CVE-2025-4092

CVE.ORG link : CVE-2025-4092

JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer