CVE-2025-1017

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-1017
Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. 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 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1926256%2C1935984%2C1935471 Broken Link
https://www.mozilla.org/security/advisories/mfsa2025-07/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-09/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-10/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-11/ Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/02/msg00006.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 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. 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 < 135, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135. (en) Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. 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 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.

03 Nov 2025, 21:18

Type Values Removed Values Added
References
  • () https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html -

06 Feb 2025, 19:39

Type Values Removed Values Added
References () https://bugzilla.mozilla.org/buglist.cgi?bug_id=1926256%2C1935984%2C1935471 - () https://bugzilla.mozilla.org/buglist.cgi?bug_id=1926256%2C1935984%2C1935471 - Broken Link
References () https://www.mozilla.org/security/advisories/mfsa2025-07/ - () https://www.mozilla.org/security/advisories/mfsa2025-07/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-09/ - () https://www.mozilla.org/security/advisories/mfsa2025-09/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-10/ - () https://www.mozilla.org/security/advisories/mfsa2025-10/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-11/ - () https://www.mozilla.org/security/advisories/mfsa2025-11/ - Vendor Advisory
Summary
  • (es) Se han detectado errores de seguridad de memoria en Firefox 134, Thunderbird 134, Firefox ESR 128.6 y Thunderbird 128.6. Algunos de estos errores mostraban evidencia de corrupción de memoria y suponemos que, con el suficiente esfuerzo, algunos de ellos podrían haberse aprovechado para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox &lt; 135, Firefox ESR &lt; 128.7, Thunderbird &lt; 128.7 y Thunderbird &lt; 135.
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
First Time Mozilla
Mozilla firefox
Mozilla thunderbird
CWE CWE-787
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.8

04 Feb 2025, 14:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-04 14:15

Updated : 2026-04-13 15:16

NVD link : CVE-2025-1017

Mitre link : CVE-2025-1017

CVE.ORG link : CVE-2025-1017

JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-787

Out-of-bounds Write