OCTOBER 6, 2026
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Case File

CVE-2026-100800

CRITICAL · CVSS 9.6 EPSS 0.31%

Source: NVD + CISA KEV + EPSS · Published 2026-09-29 · Last synced 2026-10-06

CyberRota Analysis

AI-Generated

A critical use-after-free vulnerability in the Disability Access APIs component of Firefox allows for a sandbox escape, potentially enabling attackers to execute arbitrary code outside the browser's security context. Users of Firefox, particularly those in environments where security is paramount, should prioritize updating to Firefox ESR 153.4 or Firefox 157 to mitigate this risk.

CVE
CVE-2026-100800
Severity
CRITICAL
CVSS
9.6
EPSS
0.31%
Firefox

Original NVD Description

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.