AUGUST 4, 2026
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Case File

CVE-2021-21806

HIGH · CVSS 8.8 EPSS 2.82% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-07-08 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-21806
Severity
HIGH
CVSS
8.8
EPSS
2.82%

Original NVD Description

An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.