CVE-2024-21337 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Medium 5.2 Published 11 Jan 2024 Updated 3 Jun 2025

An attacker can exploit a heap-based buffer overflow in Microsoft Edge to execute arbitrary code and escalate privileges.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2024-21337?

CVE-2024-21337 is a medium-severity memory corruption vulnerability in Microsoft Edge Chromium, published on 11 Jan 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Weakness: CWE-122

Which versions are affected by CVE-2024-21337?

It affects 1 product.

Products include Microsoft Edge Chromium.

How do I fix CVE-2024-21337?

No fix has been published for CVE-2024-21337 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2024-21337 being exploited?

There is no known exploitation of CVE-2024-21337 in the wild and no public exploit code.

All Microsoft Edge Chromium vulnerabilities

Sources

Also known as GHSA-94xx-ww3x-xh3v.