CVE-2026-103560 Role: DNS Server Tampering Vulnerability
An authorized local attacker can tamper with DNS server data due to improper authorization checks in 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-2026-103560?
CVE-2026-103560 is a medium-severity missing authorization vulnerability in Microsoft Windows Server 2012, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper authorization in DNS Server allows an authorized attacker to perform tampering locally.
Weakness: CWE-862
Which versions are affected by CVE-2026-103560?
It affects 5 products.
Products include Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2025.
How do I fix CVE-2026-103560?
No fix has been published for CVE-2026-103560 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-103560 being exploited?
There is no known exploitation of CVE-2026-103560 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-v4pr-c374-42fg.