CVE-2026-92046

HIGH 8.8CVE-2026-92046 · Published 15/09/2026 · updated 05/10/2026

In short

CVE-2026-92046 is a HIGH (CVSS 8.8) vulnerability affecting firefox (mozilla), thunderbird (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.29%, higher than 21.8% of all vulnerabilities.
Fix: update to 156.0.0, 153.3.0, 156.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`≥ 154.0.0, < 156.0.0< 153.3.0`	`156.0.0153.3.0`
thunderbird mozilla	`≥ 154.0, < 156.0< 153.3.0`	`156.0153.3.0`

Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

≥ 154.0.0, < 156.0.0< 153.3.0

156.0.0153.3.0

≥ 154.0, < 156.0< 153.3.0

156.0153.3.0

More vulnerabilities in firefox

See all →