CVE-2025-55697 Azure Local Elevation of Privilege Vulnerability
An authorized local attacker can exploit a heap-based buffer overflow in Azure Local to elevate privileges on Windows Server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-55697?
CVE-2025-55697 is a high-severity memory corruption vulnerability in Microsoft Windows Server 2022 23h2, published on 14 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Heap-based buffer overflow in Azure Local allows an authorized attacker to elevate privileges locally.
Weakness: CWE-122
Which versions are affected by CVE-2025-55697?
It affects 2 products.
Products include Microsoft Windows Server 2022 23h2, Microsoft Windows Server 2025.
How do I fix CVE-2025-55697?
No fix has been published for CVE-2025-55697 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-2025-55697 being exploited?
There is no known exploitation of CVE-2025-55697 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-2025-21326 Internet Explorer Remote Code Execution Vulnerability
- CVE-2024-26235 Windows Update Stack Elevation of Privilege Vulnerability
Sources
Also known as GHSA-hmjr-9h8v-hm78.