# CVE-2026-50653: Microsoft Azure Active Directory infinite loop denial of service

Source: https://junglewise.ai/threats/cve-2026-50653-microsoft-azure-active-directory-infinite-loop-denial-of-service  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-50653 · Severity: high · CVSS 7.5 · Published 2026-07-14

Microsoft Azure Active Directory, a cloud-based identity and access management service, is vulnerable to a flaw that could allow an attacker to disrupt the service. By sending specific network requests, an unauthorized user can trigger an infinite loop that consumes system resources, leading to a denial of service. This could prevent legitimate users from logging into their accounts or accessing corporate applications.

Technologies: [Microsoft Azure Active Directory](https://junglewise.ai/threats/technologies/entra-id). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-50653 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-50653 being exploited in the wild.

**How severe is CVE-2026-50653?** High severity, with a CVSS score of 7.5, published 14 July 2026.

**Which products and versions are affected?** Microsoft Azure Active Directory 2021 < 8.19.2.

**Is there a fix for CVE-2026-50653?** A patch was published on 2026-07-14: Fix available in version 8.19.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-50653 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-50653?** Check whether you run Microsoft Azure Active Directory at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A denial of service vulnerability exists in Microsoft Azure Active Directory due to an infinite loop (CWE-835) caused by a loop with an unreachable exit condition. An unauthenticated attacker can exploit this over the network by sending specially crafted requests to the service, leading to uncontrolled resource consumption (CWE-400). The vulnerability affects Azure Active Directory 2021 versions prior to 8.19.2. Successful exploitation results in a complete loss of availability for the affected service component. Microsoft has addressed this issue in version 8.19.2.

## Affected products

- Microsoft Azure Active Directory 2021 < 8.19.2

## Timeline

- 2026-07-14: advisory: Microsoft published the security advisory.
- 2026-07-14: patched: Fix available in version 8.19.2.

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50653](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50653)

## Related threats

- [Microsoft Azure Active Directory information disclosure](https://junglewise.ai/threats/cve-2026-85916-exposure-of-private-personal-information-to-an-unauthorized-actor)
- [Microsoft Azure Active Directory SSRF privilege escalation](https://junglewise.ai/threats/cve-2026-69851-microsoft-azure-active-directory-ssrf-privilege-escalation)
- [Microsoft Azure Active Directory deserialization denial of service](https://junglewise.ai/threats/cve-2026-50652-microsoft-azure-active-directory-deserialization-denial-of)