CVE-2021-26877 Windows DNS Server Remote Code Execution Vulnerability
Remote attackers can execute arbitrary code on Windows DNS Server via a memory corruption vulnerability, requiring immediate patching.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-26877?
CVE-2021-26877 is a critical memory corruption vulnerability in Microsoft Windows Server 2008, published on 11 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Windows DNS Server Remote Code Execution Vulnerability
Which versions are affected by CVE-2021-26877?
It affects 4 products.
Products include Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019.
How do I fix CVE-2021-26877?
No fix has been published for CVE-2021-26877 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-2021-26877 being exploited?
There is no known exploitation of CVE-2021-26877 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows Server 2008
Sources
Also known as GHSA-86v8-8qp7-vj9r.