SEPTEMBER 7, 2026
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Case File

CVE-2026-16388

CRITICAL · CVSS 9.8 EPSS 0.38%

Source: NVD + CISA KEV + EPSS · Published 2026-07-21 · Last synced 2026-08-20

CyberRota Analysis

AI-Generated

A critical vulnerability in the networking component of Firefox allows for a sandbox escape, potentially enabling attackers to execute arbitrary code outside the browser's security boundaries. This flaw affects users of Firefox versions prior to 153 and could lead to severe data breaches or system compromise. Organizations using affected versions should prioritize immediate updates to mitigate risks associated with this vulnerability.

CVE
CVE-2026-16388
Severity
CRITICAL
CVSS
9.8
EPSS
0.38%
Firefox

Original NVD Description

Sandbox escape in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Related CVEs

Other vulnerabilities affecting the same vendor(s)