OCTOBER 6, 2026
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Case File

CVE-2026-100770

CRITICAL · CVSS 9.6 EPSS 0.34%

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 DOM: Content Processes component of Firefox allows for a sandbox escape, potentially enabling attackers to execute arbitrary code outside of the browser's security boundaries. Organizations using affected versions of Firefox should prioritize patching to mitigate the risk of exploitation, particularly those in environments where web browsing is prevalent. Immediate updates to Firefox ESR 153.4, 157, 115.42, or 140.17 are essential to safeguard against this threat.

CVE
CVE-2026-100770
Severity
CRITICAL
CVSS
9.6
EPSS
0.34%
Firefox

Original NVD Description

Sandbox escape due to use-after-free in the DOM: Content Processes 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)