CVE-2025-4087

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-4087
A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Thunderbird < 138, and Thunderbird < 128.10.

4.8 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

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=1952465 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-28/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-29/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-31/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-32/ Vendor Advisory
Configurations

Configuration 1 (hide)

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

23 Sep 2025, 15:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 6.5 		v2 : unknown
v3 : 4.8

09 May 2025, 19:33

Type Values Removed Values Added
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
First Time Mozilla firefox
Mozilla thunderbird
Mozilla
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1952465 - () https://bugzilla.mozilla.org/show_bug.cgi?id=1952465 - Permissions Required
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/mfsa2025-29/ - () https://www.mozilla.org/security/advisories/mfsa2025-29/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-31/ - () https://www.mozilla.org/security/advisories/mfsa2025-31/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-32/ - () https://www.mozilla.org/security/advisories/mfsa2025-32/ - Vendor Advisory

01 May 2025, 15:16

Type Values Removed Values Added
Summary
  • (es) Se identificó una vulnerabilidad en Firefox donde el análisis de XPath podía generar un comportamiento indefinido debido a la omisión de comprobaciones nulas durante el acceso a atributos. Esto podría provocar accesos de lectura fuera de los límites y, potencialmente, corrupción de memoria. Esta vulnerabilidad afecta a Firefox &lt; 138, Firefox ESR &lt; 128.10, Thunderbird &lt; 138 y Thunderbird ESR &lt; 128.10.
Summary (en) A vulnerability was identified in Firefox where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Thunderbird < 138, and Thunderbird ESR < 128.10. (en) A vulnerability was identified in Thunderbird where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Thunderbird < 138, and Thunderbird < 128.10.

29 Apr 2025, 16:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.5
CWE CWE-125

29 Apr 2025, 14:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-04-29 14:15

Updated : 2025-09-23 15:15

NVD link : CVE-2025-4087

Mitre link : CVE-2025-4087

CVE.ORG link : CVE-2025-4087

JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-125

Out-of-bounds Read