CVE-2023-28233 Windows Secure Channel Denial of Service Vulnerability

High 7.5 Published Updated

Attackers can cause a denial of service in Windows Secure Channel, affecting Windows 11 and Server 2022 users.

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-2023-28233?

CVE-2023-28233 is a high-severity denial of service vulnerability in Microsoft Windows 11 21h2, published on 11 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Windows Secure Channel Denial of Service Vulnerability

Which versions are affected by CVE-2023-28233?

It affects 3 products.

Products include Microsoft Windows 11 21h2, Microsoft Windows 11 22h2, Microsoft Windows Server 2022.

How do I fix CVE-2023-28233?

No fix has been published for CVE-2023-28233 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-2023-28233 being exploited?

There is no known exploitation of CVE-2023-28233 in the wild and no public exploit code.

All Microsoft Windows 11 21h2 vulnerabilities

Sources

Also known as GHSA-fcx3-mx84-8j3q.

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