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 Providers
https://access.redhat.com/errata/RHSA-2026:11805 cve-icon
https://access.redhat.com/errata/RHSA-2026:11813 cve-icon
https://access.redhat.com/errata/RHSA-2026:12264 cve-icon
https://access.redhat.com/errata/RHSA-2026:13342 cve-icon
https://access.redhat.com/errata/RHSA-2026:13412 cve-icon
https://access.redhat.com/errata/RHSA-2026:13533 cve-icon
https://access.redhat.com/errata/RHSA-2026:13582 cve-icon
https://access.redhat.com/errata/RHSA-2026:13583 cve-icon
https://access.redhat.com/errata/RHSA-2026:13596 cve-icon
https://access.redhat.com/errata/RHSA-2026:13600 cve-icon
https://access.redhat.com/errata/RHSA-2026:13665 cve-icon
https://access.redhat.com/errata/RHSA-2026:13682 cve-icon
https://access.redhat.com/errata/RHSA-2026:13683 cve-icon
https://access.redhat.com/errata/RHSA-2026:13922 cve-icon
https://access.redhat.com/errata/RHSA-2026:13977 cve-icon
https://access.redhat.com/errata/RHSA-2026:14223 cve-icon
https://access.redhat.com/errata/RHSA-2026:14303 cve-icon
https://access.redhat.com/errata/RHSA-2026:15889 cve-icon
https://access.redhat.com/errata/RHSA-2026:7671 cve-icon
https://access.redhat.com/errata/RHSA-2026:7672 cve-icon
https://access.redhat.com/errata/RHSA-2026:8052 cve-icon
https://access.redhat.com/errata/RHSA-2026:8459 cve-icon
https://access.redhat.com/errata/RHSA-2026:9345 cve-icon
https://access.redhat.com/errata/RHSA-2026:9638 cve-icon
https://access.redhat.com/security/cve/CVE-2026-5732 cve-icon
https://bugzilla.mozilla.org/show_bug.cgi?id=2017867 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2455908 cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-5732 cve-icon
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5732.json cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-5732 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-25/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-27/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-27/#CVE-2026-5732 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-28/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-29/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-29/#CVE-2026-5732 cve-icon
History

Mon, 13 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Description 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. 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.

Wed, 08 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla firefox Esr
Mozilla thunderbird
Vendors & Products Mozilla firefox Esr
Mozilla thunderbird

Wed, 08 Apr 2026 12:30:00 +0000


Tue, 07 Apr 2026 20:45:00 +0000

Type Values Removed Values Added
Description Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2 and Firefox ESR < 140.9.1. 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

Tue, 07 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
Vendors & Products Mozilla
Mozilla firefox

Tue, 07 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Description Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2 and Firefox ESR < 140.9.1.
Title Incorrect boundary conditions, integer overflow in the Graphics: Text component
Weaknesses CWE-190
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-04-07T12:43:12.829Z

Updated: 2026-07-15T00:42:18.583Z

Reserved: 2026-04-07T12:43:12.349Z

Link: CVE-2026-5732

cve-icon Vulnrichment

Updated: 2026-07-15T00:42:18.583Z

cve-icon NVD

Status : Modified

Published: 2026-04-07T13:16:47.463

Modified: 2026-07-15T01:16:44.233

Link: CVE-2026-5732

cve-icon Redhat

Severity : Important

Publid Date: 2026-04-07T12:43:12Z

Links: CVE-2026-5732 - Bugzilla