CVE-2025-5262

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-5262
A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 139 and Thunderbird < 128.11.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-45/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-46/ Vendor Advisory
Configurations

Configuration 1 (hide)

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

19 Sep 2025, 17:18

Type Values Removed Values Added
First Time Mozilla
Mozilla thunderbird
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
CPE cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
CWE CWE-415
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 - () https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 - Issue Tracking, Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2025-45/ - () https://www.mozilla.org/security/advisories/mfsa2025-45/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-46/ - () https://www.mozilla.org/security/advisories/mfsa2025-46/ - Vendor Advisory

20 Aug 2025, 14:40

Type Values Removed Values Added
Summary
  • (es) Podría haberse producido una doble liberación en `vpx_codec_enc_init_multi` tras un error de asignación al inicializar el codificador para WebRTC. Esto podría haber causado corrupción de memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird (versión anterior a la 139) y Thunderbird (versión anterior a la 128.11).

19 Aug 2025, 21:15

Type Values Removed Values Added
Summary (en) Rejected reason: This CVE was accidentally assigned by Mozilla but should be assigned by another CNA. When the correct CVE is available, Mozilla's advisories will be updated to reflect that identifier. (en) A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 139 and Thunderbird < 128.11.
References
  • () https://bugzilla.mozilla.org/show_bug.cgi?id=1962421 -
  • () https://www.mozilla.org/security/advisories/mfsa2025-45/ -
  • () https://www.mozilla.org/security/advisories/mfsa2025-46/ -

27 May 2025, 18:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 7.5 		v2 : unknown
v3 : unknown
CWE CWE-415
Summary (en) A double-free could have occurred in `vpx_codec_enc_init_multi` after a failed allocation when initializing the encoder for WebRTC. This could have caused memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 139, Firefox ESR < 115.24, and Firefox ESR < 128.11. (en) Rejected reason: This CVE was accidentally assigned by Mozilla but should be assigned by another CNA. When the correct CVE is available, Mozilla's advisories will be updated to reflect that identifier.
References
  • {'url': 'https://bugzilla.mozilla.org/show_bug.cgi?id=1962421', 'source': 'security@mozilla.org'}
  • {'url': 'https://www.mozilla.org/security/advisories/mfsa2025-42/', 'source': 'security@mozilla.org'}
  • {'url': 'https://www.mozilla.org/security/advisories/mfsa2025-43/', 'source': 'security@mozilla.org'}
  • {'url': 'https://www.mozilla.org/security/advisories/mfsa2025-44/', 'source': 'security@mozilla.org'}

27 May 2025, 16:15

Type Values Removed Values Added
CWE CWE-415
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5

27 May 2025, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-05-27 13:15

Updated : 2025-09-19 17:18

NVD link : CVE-2025-5262

Mitre link : CVE-2025-5262

CVE.ORG link : CVE-2025-5262

JSON object : View

Products Affected

mozilla

  • thunderbird
CWE
CWE-415

Double Free