CVE-2020-1259 Security feature bypass in Windows

Medium 4.3 Published Updated

Attackers can bypass security features in Windows Host Guardian Service due to improper hash handling, affecting Windows 10 and Server users.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-1259?

CVE-2020-1259 is a medium-severity vulnerability in Microsoft Windows 10, published on 9 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A security feature bypass vulnerability exists when Windows Host Guardian Service improperly handles hashes recorded and logged, aka 'Windows Host Guardian Service Security Feature Bypass Vulnerability'.

Which versions are affected by CVE-2020-1259?

It affects 3 products.

Products include Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019.

How do I fix CVE-2020-1259?

No fix has been published for CVE-2020-1259 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-1259 being exploited?

There is no known exploitation of CVE-2020-1259 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-4538-wpvw-289w.

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