SEPTEMBER 17, 2026
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Case File

CVE-2026-74943

CRITICAL · CVSS 9.8 EPSS 0.57%

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

CyberRota Analysis

AI-Generated

A use-after-free vulnerability in the Graphics: ImageLib component of Firefox could allow an attacker to execute arbitrary code or cause a crash, potentially compromising user systems. Users of affected Firefox versions should prioritize updating to Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, or Firefox ESR 153.1 to mitigate this risk. This issue is particularly relevant for organizations relying on Firefox for secure browsing, as it may expose sensitive data or lead to system instability.

CVE
CVE-2026-74943
Severity
CRITICAL
CVSS
9.8
EPSS
0.57%
Firefox

Original NVD Description

Use-after-free in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, 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