# CVE-2026-58630: Microsoft Azure App Service privilege escalation

Source: https://junglewise.ai/threats/cve-2026-58630-microsoft-azure-app-service-privilege-escalation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-24. Updated: 2026-07-24  
License: CC BY 4.0 with a link back

CVE-2026-58630 · Severity: critical · CVSS 10 · Published 2026-07-24

Azure App Service is a cloud platform used by organizations to host and manage web applications. A critical security flaw in this service allows an unauthorized person to gain elevated administrative permissions over the network. This could lead to full control over hosted applications and potential access to sensitive customer data.

Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-58630 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-58630 being exploited in the wild.

**How severe is CVE-2026-58630?** Critical severity, with a CVSS score of 10, published 24 July 2026.

**Which products and versions are affected?** Microsoft Azure App Service for Linux All versions.

**Is there a fix for CVE-2026-58630?** 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-2026-58630 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-58630?** Check whether you run Microsoft Azure App Service for Linux 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 vulnerability classified as improper access control (CWE-284) exists in Azure App Service for Linux. The flaw allows an unauthenticated remote attacker to bypass security restrictions and elevate their privileges within the environment. According to the CVSS vector, the attack can be carried out over the network with low complexity and requires no user interaction. Successful exploitation results in a high impact on confidentiality and integrity, potentially allowing for a full compromise of the service instance. As this is a cloud-hosted service, Microsoft typically manages the deployment of fixes directly.

## Affected products

- Microsoft Azure App Service for Linux All versions

## Timeline

- 2026-07-24: disclosed: Vulnerability published by Microsoft and NVD.

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58630](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58630)