CVE-2026-117993 Details
Description
Integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
An integer overflow vulnerability has been identified in the Graphics: Text component of Mozilla Firefox. This issue can lead to memory-related errors, potentially allowing for exploitation. The vulnerability affects several versions of Firefox and Firefox ESR, and has been reported to Bug 2080581.
Users can upgrade to Firefox 159 or Firefox ESR 153.6 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 27, 2026CISA-ADP
Assessed Nov 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2080581 | [email protected] | Issue TrackingPermission RequiredVendor |
| https://www.mozilla.org/security/advisories/mfsa2026-118/ | [email protected] | AdvisoryBundleRemedyVendor |
| https://www.mozilla.org/security/advisories/mfsa2026-120/ | [email protected] | AdvisoryBundleRemedyVendor |
| https://www.mozilla.org/security/advisories/mfsa2026-121/ | [email protected] | |
| https://www.mozilla.org/security/advisories/mfsa2026-122/ | [email protected] |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-190 | Integer Overflow or Wraparound | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Mozilla Firefox | All versions |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | CVE Modified | CISA-ADP |
| Oct 27, 2026 | CVE Modified | [email protected] |
| Oct 27, 2026 | New CVE Received | [email protected] |