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.
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/
https://access.redhat.com/errata/RHSA-2026:11805
https://access.redhat.com/errata/RHSA-2026:11813
https://access.redhat.com/errata/RHSA-2026:12264
https://access.redhat.com/errata/RHSA-2026:13342
https://access.redhat.com/errata/RHSA-2026:13412
https://access.redhat.com/errata/RHSA-2026:13533
https://access.redhat.com/errata/RHSA-2026:13582
https://access.redhat.com/errata/RHSA-2026:13583
https://access.redhat.com/errata/RHSA-2026:13596
https://access.redhat.com/errata/RHSA-2026:13600
https://access.redhat.com/errata/RHSA-2026:13665
https://access.redhat.com/errata/RHSA-2026:13682
https://access.redhat.com/errata/RHSA-2026:13683
https://access.redhat.com/errata/RHSA-2026:13922
https://access.redhat.com/errata/RHSA-2026:13977
https://access.redhat.com/errata/RHSA-2026:14223
https://access.redhat.com/errata/RHSA-2026:14303
https://access.redhat.com/errata/RHSA-2026:15889
https://access.redhat.com/errata/RHSA-2026:7671
https://access.redhat.com/errata/RHSA-2026:7672
https://access.redhat.com/errata/RHSA-2026:8052
https://access.redhat.com/errata/RHSA-2026:8459
https://access.redhat.com/errata/RHSA-2026:9345
https://access.redhat.com/errata/RHSA-2026:9638
https://access.redhat.com/security/cve/CVE-2026-5732
https://bugzilla.redhat.com/show_bug.cgi?id=2455908
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5732.json
Configurations

Configuration 1 (hide)

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

History

30 Jun 2026, 03:21

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:11805 -
  • () https://access.redhat.com/errata/RHSA-2026:11813 -
  • () https://access.redhat.com/errata/RHSA-2026:12264 -
  • () https://access.redhat.com/errata/RHSA-2026:13342 -
  • () https://access.redhat.com/errata/RHSA-2026:13412 -
  • () https://access.redhat.com/errata/RHSA-2026:13533 -
  • () https://access.redhat.com/errata/RHSA-2026:13582 -
  • () https://access.redhat.com/errata/RHSA-2026:13583 -
  • () https://access.redhat.com/errata/RHSA-2026:13596 -
  • () https://access.redhat.com/errata/RHSA-2026:13600 -
  • () https://access.redhat.com/errata/RHSA-2026:13665 -
  • () https://access.redhat.com/errata/RHSA-2026:13682 -
  • () https://access.redhat.com/errata/RHSA-2026:13683 -
  • () https://access.redhat.com/errata/RHSA-2026:13922 -
  • () https://access.redhat.com/errata/RHSA-2026:13977 -
  • () https://access.redhat.com/errata/RHSA-2026:14223 -
  • () https://access.redhat.com/errata/RHSA-2026:14303 -
  • () https://access.redhat.com/errata/RHSA-2026:15889 -
  • () https://access.redhat.com/errata/RHSA-2026:7671 -
  • () https://access.redhat.com/errata/RHSA-2026:7672 -
  • () https://access.redhat.com/errata/RHSA-2026:8052 -
  • () https://access.redhat.com/errata/RHSA-2026:8459 -
  • () https://access.redhat.com/errata/RHSA-2026:9345 -
  • () https://access.redhat.com/errata/RHSA-2026:9638 -
  • () https://access.redhat.com/security/cve/CVE-2026-5732 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2455908 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5732.json -

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
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
First Time Mozilla
Mozilla firefox
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*

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 : 2026-07-15 01:16


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