Firefox ESR

Platform

Threat entity extracted from intelligence sources

Frequency

4

occurrences

First Seen

January 14, 2026

Last Seen

April 14, 2026

Overview

Recent Events

Relationships

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Related Clusters (1)

Critical Vulnerabilities in Firefox and Thunderbird Require Immediate Patching

Mar 25·4 sources

Related Articles (4)

SUSE 15 SP7 MozillaFirefox Important Memory Safety Patch 2026-1322

Linuxsecurity·Apr 14

CVE-2026-4710 - Exploits & Severity

CVE-2023-6856 The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and sandbox escape. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

Api.Msrc.Microsoft·Feb 18

January 2026 Microsoft Patch Tuesday: Actively exploited zero day needs attention

Csoonline·Jan 14

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