CVE-2025-21342 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
An attacker can execute arbitrary code on systems running Microsoft Edge via a memory corruption vulnerability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-21342?
CVE-2025-21342 is a high-severity memory corruption vulnerability in Microsoft Edge Chromium, published on 6 Feb 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Weakness: CWE-843
Which versions are affected by CVE-2025-21342?
It affects 1 product.
Products include Microsoft Edge Chromium.
How do I fix CVE-2025-21342?
No fix has been published for CVE-2025-21342 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-2025-21342 being exploited?
There is no known exploitation of CVE-2025-21342 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Edge Chromium
- CVE-2024-21326 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-35618 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-36735 Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2022-33649 Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
- CVE-2026-58289 Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Sources
Also known as GHSA-68mp-7f78-5jfg.