CVE-2026-50653 Azure Active Directory Denial of Service Vulnerability
An unauthorized attacker can cause a denial of service in Azure Active Directory via an infinite loop vulnerability.
- 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-2026-50653?
CVE-2026-50653 is a high-severity denial of service vulnerability in Microsoft .Net Framework, published on 14 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Loop with unreachable exit condition ('infinite loop') in Azure Active Directory allows an unauthorized attacker to deny service over a network.
Which versions are affected by CVE-2026-50653?
It affects 2 products.
Products include Microsoft .Net Framework, Microsoft Azure Active Directory.
How do I fix CVE-2026-50653?
No fix has been published for CVE-2026-50653 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-2026-50653 being exploited?
There is no known exploitation of CVE-2026-50653 in the wild and no public exploit code.