SEPTEMBER 19, 2026
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Case File

CVE-2026-74953

HIGH · CVSS 8.8 EPSS 0.30%

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

CyberRota Analysis

AI-Generated

A privilege escalation vulnerability in the Networking: Cookies component of Firefox allows attackers to gain elevated permissions, potentially compromising user data and system integrity. Users running affected versions of Firefox should prioritize updating to Firefox 154, Firefox ESR 140.14, or Firefox ESR 153.1 to mitigate the risk. Organizations relying on Firefox for secure browsing should take immediate action to ensure their installations are up to date.

CVE
CVE-2026-74953
Severity
HIGH
CVSS
8.8
EPSS
0.30%
Firefox

Original NVD Description

Privilege escalation in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, 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