SEPTEMBER 19, 2026
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Case File

CVE-2026-74981

HIGH · CVSS 8.1 EPSS 0.15%

Source: NVD + CISA KEV + EPSS · Published 2026-08-18 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

A site isolation vulnerability in the Audio/Video: Web Codecs component of Firefox could potentially allow attackers to access sensitive data across different sites. Users running versions prior to Firefox 154 or Firefox ESR 153.1 should prioritize updates to mitigate potential exploitation of this issue.

CVE
CVE-2026-74981
Severity
HIGH
CVSS
8.1
EPSS
0.15%
Firefox

Original NVD Description

Site isolation issue in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-84642 HIGH CVE-2026-84641 HIGH CVE-2026-84640 HIGH CVE-2026-84639 CRITICAL CVE-2026-84637 CRITICAL CVE-2026-84145 HIGH