CVE-2025-21326 Internet Explorer Remote Code Execution Vulnerability
An attacker can execute arbitrary code via a memory corruption vulnerability in Internet Explorer on Windows Server.
- 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-2025-21326?
CVE-2025-21326 is a high-severity memory corruption vulnerability in Microsoft Windows Server 2022 23h2, published on 14 Jan 2025. 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
Internet Explorer Remote Code Execution Vulnerability
Weakness: CWE-843
Which versions are affected by CVE-2025-21326?
It affects 2 products.
Products include Microsoft Windows Server 2022 23h2, Microsoft Windows Server 2025.
How do I fix CVE-2025-21326?
No fix has been published for CVE-2025-21326 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-2025-21326 being exploited?
There is no known exploitation of CVE-2025-21326 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows Server 2022 23h2
- CVE-2024-30007 Microsoft Brokering File System Elevation of Privilege Vulnerability
- CVE-2024-21345 Windows Kernel Elevation of Privilege Vulnerability
- CVE-2024-21353 Microsoft WDAC ODBC Driver Remote Code Execution Vulnerability
- CVE-2025-55697 Azure Local Elevation of Privilege Vulnerability
- CVE-2024-26235 Windows Update Stack Elevation of Privilege Vulnerability
Sources
Also known as GHSA-hphq-5232-xjcf.