CVE-2023-28240 Windows Network Load Balancing Remote Code Execution Vulnerability

High 8.8 Published Updated

An attacker can execute arbitrary code on Windows Server systems via a heap-based buffer overflow in Network Load Balancing.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-28240?

CVE-2023-28240 is a high-severity memory corruption vulnerability in Microsoft Windows Server 2008, published on 11 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Windows Network Load Balancing Remote Code Execution Vulnerability

Weakness: CWE-122

Which versions are affected by CVE-2023-28240?

It affects 5 products.

Products include Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022.

How do I fix CVE-2023-28240?

No fix has been published for CVE-2023-28240 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-2023-28240 being exploited?

There is no known exploitation of CVE-2023-28240 in the wild and no public exploit code.

All Microsoft Windows Server 2008 vulnerabilities

Sources

Also known as GHSA-fg86-xg34-2fr5.

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