CVE-2026-5732
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mozilla | Firefox | 140.9.1 <= 140.* | unaffected |
| Mozilla | Firefox | 149.0.2 <= * | unaffected |
| Mozilla | Thunderbird | 140.9.1 <= 140.* | unaffected |
| Mozilla | Thunderbird | 149.0.2 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
firefox: thunderbird: Incorrect boundary conditions, integer overflow in the Graphics: Text component
Additional References
- 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
- https://access.redhat.com/errata/RHSA-2026:13977
- https://access.redhat.com/errata/RHSA-2026:13665
- https://access.redhat.com/errata/RHSA-2026:11813
- https://access.redhat.com/errata/RHSA-2026:7672
- https://access.redhat.com/errata/RHSA-2026:9638
- https://access.redhat.com/errata/RHSA-2026:8052
- https://access.redhat.com/errata/RHSA-2026:9345
- https://access.redhat.com/errata/RHSA-2026:11805
- https://access.redhat.com/errata/RHSA-2026:13600
- https://access.redhat.com/errata/RHSA-2026:14303
- https://access.redhat.com/errata/RHSA-2026:13683
- https://access.redhat.com/errata/RHSA-2026:15889
- https://access.redhat.com/errata/RHSA-2026:13682
- https://access.redhat.com/errata/RHSA-2026:14223
- https://access.redhat.com/errata/RHSA-2026:13596
- https://access.redhat.com/errata/RHSA-2026:12264
- https://access.redhat.com/errata/RHSA-2026:13922
- https://access.redhat.com/errata/RHSA-2026:13412
- https://access.redhat.com/errata/RHSA-2026:13582
- https://access.redhat.com/errata/RHSA-2026:13533
- https://access.redhat.com/errata/RHSA-2026:13583
- https://access.redhat.com/errata/RHSA-2026:13342
- https://access.redhat.com/errata/RHSA-2026:7671
- https://access.redhat.com/errata/RHSA-2026:8459
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2017867
- https://www.mozilla.org/security/advisories/mfsa2026-25/
- https://www.mozilla.org/security/advisories/mfsa2026-27/
- https://www.mozilla.org/security/advisories/mfsa2026-28/
- https://www.mozilla.org/security/advisories/mfsa2026-29/
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.