CVE-2023-32021 Windows SMB Witness Service Security Feature Bypass Vulnerability
An attacker can bypass security features in the Windows SMB Witness Service, potentially undermining security controls on Windows Server systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-32021?
CVE-2023-32021 is a high-severity vulnerability in Microsoft Windows Server 2012, published on 13 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Windows SMB Witness Service Security Feature Bypass Vulnerability
Which versions are affected by CVE-2023-32021?
It affects 4 products.
Products include Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022.
How do I fix CVE-2023-32021?
No fix has been published for CVE-2023-32021 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-32021 being exploited?
There is no known exploitation of CVE-2023-32021 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows Server 2012
- CVE-2025-59287 Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data
- CVE-2026-69595 Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
- CVE-2026-78445 Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
- CVE-2026-41089 Windows Netlogon Remote Code Execution Vulnerability
- CVE-2024-43639 Windows KDC Proxy Remote Code Execution Vulnerability
Sources
Also known as GHSA-3hjc-gv2m-96gh.