CVE-2026-5732

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-5732
Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.

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/show_bug.cgi?id=2017867 Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-25/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-27/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-28/
https://www.mozilla.org/security/advisories/mfsa2026-29/
Configurations

Configuration 1 (hide)

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

13 Apr 2026, 15:17

Type Values Removed Values Added
Summary (en) Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2, Firefox ESR < 140.9.1, Thunderbird < 149.0.2, and Thunderbird < 140.9.1. (en) Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.

07 Apr 2026, 19:16

Type Values Removed Values Added
Summary (en) Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2 and Firefox ESR < 140.9.1. (en) Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2, Firefox ESR < 140.9.1, Thunderbird < 149.0.2, and Thunderbird < 140.9.1.
References
  • () https://www.mozilla.org/security/advisories/mfsa2026-28/ -
  • () https://www.mozilla.org/security/advisories/mfsa2026-29/ -

07 Apr 2026, 17:18

Type Values Removed Values Added
First Time Mozilla
Mozilla firefox
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
References () https://bugzilla.mozilla.org/show_bug.cgi?id=2017867 - () https://bugzilla.mozilla.org/show_bug.cgi?id=2017867 - Issue Tracking, Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2026-25/ - () https://www.mozilla.org/security/advisories/mfsa2026-25/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-27/ - () https://www.mozilla.org/security/advisories/mfsa2026-27/ - Vendor Advisory

07 Apr 2026, 15:17

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 8.8
CWE CWE-190

07 Apr 2026, 13:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-07 13:16

Updated : 2026-04-13 15:17

NVD link : CVE-2026-5732

Mitre link : CVE-2026-5732

CVE.ORG link : CVE-2026-5732

JSON object : View

Products Affected

mozilla

  • firefox
CWE
CWE-190

Integer Overflow or Wraparound