CVE-2025-10537

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-10537
Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. 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 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.

8.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1938220%2C1980730%2C1981280%2C1981283%2C1984505%2C1985067 Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2025-73/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-75/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-77/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-78/ Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/09/msg00020.html
https://lists.debian.org/debian-lts-announce/2025/09/msg00026.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:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
History

13 Apr 2026, 15:16

Type Values Removed Values Added
Summary (en) Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. 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 < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3. (en) Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. 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 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.

03 Nov 2025, 19:15

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/09/msg00020.html -
  • () https://lists.debian.org/debian-lts-announce/2025/09/msg00026.html -

20 Sep 2025, 02:58

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:*:*:*:*:-:*:*:*
References () https://bugzilla.mozilla.org/buglist.cgi?bug_id=1938220%2C1980730%2C1981280%2C1981283%2C1984505%2C1985067 - () https://bugzilla.mozilla.org/buglist.cgi?bug_id=1938220%2C1980730%2C1981280%2C1981283%2C1984505%2C1985067 - Issue Tracking
References () https://www.mozilla.org/security/advisories/mfsa2025-73/ - () https://www.mozilla.org/security/advisories/mfsa2025-73/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-75/ - () https://www.mozilla.org/security/advisories/mfsa2025-75/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-77/ - () https://www.mozilla.org/security/advisories/mfsa2025-77/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-78/ - () https://www.mozilla.org/security/advisories/mfsa2025-78/ - Vendor Advisory
First Time Mozilla
Mozilla firefox
Mozilla thunderbird

16 Sep 2025, 19:15

Type Values Removed Values Added
CWE CWE-119
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 8.8

16 Sep 2025, 15:15

Type Values Removed Values Added
References
  • () https://www.mozilla.org/security/advisories/mfsa2025-77/ -
  • () https://www.mozilla.org/security/advisories/mfsa2025-78/ -
Summary (en) Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. 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 < 143 and Firefox ESR < 140.3. (en) Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. 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 < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.

16 Sep 2025, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-09-16 13:15

Updated : 2026-04-13 15:16

NVD link : CVE-2025-10537

Mitre link : CVE-2025-10537

CVE.ORG link : CVE-2025-10537

JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer