# CVE-2026-69555: Microsoft Azure Arc privilege escalation via incorrect authorization

Source: https://junglewise.ai/threats/cve-2026-69555-microsoft-azure-arc-privilege-escalation-via-incorrect  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-20. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-69555 · Severity: critical · CVSS 10 · Published 2026-08-20

Azure Arc is Microsoft's service for managing hybrid and multi-cloud infrastructure. A critical authorization flaw allows an unauthenticated attacker on the network to gain elevated privileges and take control of Arc-managed systems. This could enable an attacker to compromise servers, applications, and data across an organization's entire hybrid cloud environment.

Technologies: [Microsoft Azure Arc](https://junglewise.ai/threats/technologies/azure-arc). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-69555 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69555 being exploited in the wild.

**How severe is CVE-2026-69555?** Critical severity, with a CVSS score of 10, published 20 August 2026.

**Which products and versions are affected?** Microsoft Azure Arc.

**Is there a fix for CVE-2026-69555?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-69555 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-69555?** Check whether you run Microsoft Azure Arc. 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

Azure Arc contains an incorrect authorization vulnerability that allows an unauthenticated network-based attacker to escalate privileges. The vulnerability results from improper authorization checks in the Arc service, enabling an attacker to bypass authentication and access controls over the network. An attacker can exploit this to gain elevated privileges and gain unauthorized control over Arc-connected resources. The issue affects multiple versions of Azure Arc. A patch is available from Microsoft.

## Affected products

- Microsoft Azure Arc

## Timeline

- 2026-08-20: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69555](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69555)

## Related threats

- [Microsoft Azure Arc path traversal privilege escalation](https://junglewise.ai/threats/cve-2026-70009-improper-limitation-of-a-pathname-to-a-restricted-directory-path)
- [Microsoft Azure Arc elevation of privilege](https://junglewise.ai/threats/cve-2026-69399-microsoft-azure-arc-elevation-of-privilege)
- [Microsoft Azure Arc cross-domain policy privilege escalation](https://junglewise.ai/threats/cve-2026-62895-microsoft-azure-arc-cross-domain-policy-privilege-escalation)
- [Microsoft Azure Arc name resolution privilege escalation](https://junglewise.ai/threats/cve-2026-65816-microsoft-azure-arc-name-resolution-privilege-escalation)