CVE-2026-3847

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-3847
Memory safety bugs present in Firefox 148.0.2. 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 148.0.2.

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=2017513%2C2017622%2C2019341 Broken Link
https://www.mozilla.org/security/advisories/mfsa2026-19/ Vendor Advisory
Configurations

Configuration 1 (hide)

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

13 Apr 2026, 15:17

Type Values Removed Values Added
Summary (en) Memory safety bugs present in Firefox 148.0.2. 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 < 148.0.2. (en) Memory safety bugs present in Firefox 148.0.2. 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 148.0.2.

11 Mar 2026, 15:55

Type Values Removed Values Added
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
References () https://bugzilla.mozilla.org/buglist.cgi?bug_id=2017513%2C2017622%2C2019341 - () https://bugzilla.mozilla.org/buglist.cgi?bug_id=2017513%2C2017622%2C2019341 - Broken Link
References () https://www.mozilla.org/security/advisories/mfsa2026-19/ - () https://www.mozilla.org/security/advisories/mfsa2026-19/ - Vendor Advisory
First Time Mozilla
Mozilla firefox

11 Mar 2026, 13:53

Type Values Removed Values Added
Summary
  • (es) Errores de seguridad de memoria presentes en Firefox 148.0.2. Algunos de estos errores mostraron evidencia de corrupción de memoria y presumimos que con suficiente esfuerzo algunos de estos podrían haber sido explotados para ejecutar código arbitrario. Esta vulnerabilidad afecta a Firefox &lt; 148.0.2.

10 Mar 2026, 18:19

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-10 18:19

Updated : 2026-04-13 15:17

NVD link : CVE-2026-3847

Mitre link : CVE-2026-3847

CVE.ORG link : CVE-2026-3847

JSON object : View

Products Affected

mozilla

  • firefox
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-416

Use After Free