OCTOBER 8, 2026
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Case File

CVE-2026-100773

HIGH · CVSS 8.8 EPSS 0.32%

Source: NVD + CISA KEV + EPSS · Published 2026-09-29 · Last synced 2026-10-08

CyberRota Analysis

AI-Generated

A use-after-free vulnerability in the IndexedDB component of Firefox can lead to potential memory corruption, allowing attackers to execute arbitrary code. Users of affected Firefox versions, particularly those in enterprise environments relying on Extended Support Releases (ESR), should prioritize applying the latest updates to mitigate the risk of exploitation.

CVE
CVE-2026-100773
Severity
HIGH
CVSS
8.8
EPSS
0.32%
Firefox

Original NVD Description

Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-96869 MEDIUM CVE-2026-100832 HIGH CVE-2026-100823 MEDIUM CVE-2026-100820 HIGH CVE-2026-100819 CRITICAL CVE-2026-100818 CRITICAL