CVE-2025-21179 DHCP Client Service Denial of Service Vulnerability
An attacker can cause a denial of service in the Windows DHCP Client Service via an out-of-bounds read vulnerability.
- 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-2025-21179?
CVE-2025-21179 is a medium-severity denial of service vulnerability in Microsoft Windows 11 24h2, published on 11 Feb 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
DHCP Client Service Denial of Service Vulnerability
Weakness: CWE-125
Which versions are affected by CVE-2025-21179?
It affects 2 products.
Products include Microsoft Windows 11 24h2, Microsoft Windows Server 2025.
How do I fix CVE-2025-21179?
No fix has been published for CVE-2025-21179 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-21179 being exploited?
There is no known exploitation of CVE-2025-21179 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 11 24h2
- CVE-2025-60710 Microsoft Windows Link Following
- CVE-2026-54990 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2025-50165 Windows Graphics Component Remote Code Execution Vulnerability
- CVE-2025-21311 Windows NTLM V1 Elevation of Privilege Vulnerability
- CVE-2026-108463 Windows SmartScreen Security Feature Bypass Vulnerability
Sources
Also known as GHSA-rmg9-p599-jx65.