AUGUST 4, 2026
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Case File

CVE-2021-23957

HIGH · CVSS 7.4 EPSS 0.79%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-02-26 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.4. It affects Android, Firefox.

CVE
CVE-2021-23957
Severity
HIGH
CVSS
7.4
EPSS
0.79%
Android Firefox

Original NVD Description

Navigations through the Android-specific `intent` URL scheme could have been misused to escape iframe sandbox. Note: This issue only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 85.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-16412 CRITICAL CVE-2026-16411 CRITICAL CVE-2026-16410 CRITICAL CVE-2026-16409 HIGH CVE-2026-16408 CRITICAL CVE-2026-16407 CRITICAL