CVE-2020-13543

PoC —

CVSS 3.1

8.8 high

EPSS

3%p88

Published

Dec 3, 2020 (Dec 3, 2020)

Modified

Jun 17, 2026

Description

A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0. A specially crafted web page can trigger a use-after-free vulnerability which can lead to remote code execution. An attacker can get a user to visit a webpage to trigger this vulnerability.

Vendors: webkitgtk
Products: webkitgtk
Weakness: CWE-416
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (3.5%)

In the news2 stories

Talos reported WebKit flaws in WebKit that allow Remote Code Execution

Security AffairsDec 1, 08:50 UTC · Dec 1, 2020Vulnerability in the wildCVE-2020-13584 CVE-2020-13543 CVE-2020-9948+3 CVEs

Vulnerability Spotlight: Multiple vulnerabilities in WebKit

Cisco TalosNov 30, 15:00 UTC · Nov 30, 2020Vulnerability in the wildCVE-2020-13543 CVE-2020-13584