CVE-2021-36949 Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability

High 7.1 Published Updated

Attackers can bypass authentication in Azure AD Connect, potentially gaining unauthorized access to identity synchronization services.

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

What is CVE-2021-36949?

CVE-2021-36949 is a high-severity authentication bypass vulnerability in Microsoft Azure Active Directory Connect Provisioning Agent, published on 12 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability

Weakness: CWE-287

Which versions are affected by CVE-2021-36949?

It affects 2 products.

Products include Microsoft Azure Active Directory Connect, Microsoft Azure Active Directory Connect Provisioning Agent.

How do I fix CVE-2021-36949?

No fix has been published for CVE-2021-36949 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-36949 being exploited?

There is no known exploitation of CVE-2021-36949 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-55wf-38cw-5f72.

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