OCTOBER 8, 2026
Live Feed
Back to database
Case File

CVE-2026-100780

HIGH · CVSS 8.8 EPSS 0.32%

Source: NVD + CISA KEV + EPSS · Published 2026-09-29 · Last synced 2026-10-08

CyberRota Analysis

AI-Generated

A use-after-free vulnerability in the DOM Core and HTML component of Firefox can lead to potential code execution, allowing attackers to exploit affected versions. Users of Firefox, particularly those on older versions prior to the fixes in Firefox ESR 153.4, 157, 115.42, and 140.17, should prioritize updating their browsers to mitigate this high-severity risk. Organizations relying on Firefox for their operations must ensure all instances are updated to protect against potential exploitation.

CVE
CVE-2026-100780
Severity
HIGH
CVSS
8.8
EPSS
0.32%
Firefox

Original NVD Description

Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Related CVEs

Other vulnerabilities affecting the same vendor(s)