CVE-2026-117993
firefox-esr: Integer overflow in the Graphics: Text component
CVE-2026-117993 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-117993, released October 29, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0039
33rd percentile
Integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| firefox · ol 10 | 0:153.6.0-1.0.1.el10_2 | ELSA-2026-93956 | Nov 7, 2026 |
| firefox · ol 8 | 0:153.6.0-1.0.1.el8_10 | ELSA-2026-94405 | Nov 7, 2026 |
| firefox · ol 9 | 0:153.6.0-1.0.1.el9_8 | ELSA-2026-93957 | Nov 7, 2026 |
| firefox-esr · Debian 12.15 (bookworm) | 153.6.0esr-1~deb12u2 | DEBIAN-CVE-2026-117993 | Oct 29, 2026 |
| firefox-esr · Debian 13.5 (trixie) | 153.6.0esr-1~deb13u1 | DEBIAN-CVE-2026-117993 | Oct 29, 2026 |
| firefox-x11 · ol 9 | 0:153.6.0-1.0.1.el9_8 | ELSA-2026-93957 | Nov 7, 2026 |
| thunderbird · Debian 12.15 (bookworm) | 1:153.6.0esr-1~deb12u2 | DEBIAN-CVE-2026-117993 | Oct 29, 2026 |
| thunderbird · Debian 13.5 (trixie) | 1:153.6.0esr-1~deb13u1 | DEBIAN-CVE-2026-117993 | Oct 29, 2026 |
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