AUGUST 4, 2026
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Case File

CVE-2021-38492

MEDIUM · CVSS 6.5 EPSS 1.12%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-03 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. It affects Windows, Firefox.

CVE
CVE-2021-38492
Severity
MEDIUM
CVSS
6.5
EPSS
1.12%
Windows Firefox

Original NVD Description

When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 92, Thunderbird < 91.1, Thunderbird < 78.14, Firefox ESR < 78.14, and Firefox ESR < 91.1.

Related CVEs

Other vulnerabilities affecting the same vendor(s)