CVE-2025-49688 Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability
An unauthorized attacker can execute arbitrary code over the network via a double free vulnerability in Windows RRAS.
- 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-2025-49688?
CVE-2025-49688 is a high-severity use after free vulnerability in Microsoft Windows Server 2012, published on 8 Jul 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
Double free in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
Weakness: CWE-415
Which versions are affected by CVE-2025-49688?
It affects 6 products.
Products include Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23h2, Microsoft Windows Server 2025.
How do I fix CVE-2025-49688?
No fix has been published for CVE-2025-49688 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-49688 being exploited?
There is no known exploitation of CVE-2025-49688 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-fjff-r876-r378.