What is CVE-2026-58630?

CVE-2026-58630 is a critical-severity vulnerability in Microsoft Azure App Service For Linux, classified under Improper Access Control. CVSS score: 10.0/10. Published 2026-07-24.

How severe is CVE-2026-58630?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Vulnerability in Microsoft Azure App Service For Linux

CVE-2026-58630

Improper access control in Azure App Service allows an unauthorized attacker to elevate privileges over a network.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N.

Affected products

Microsoft Azure App Service For Linux

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-58630?: CVE-2026-58630 is a critical-severity vulnerability in Microsoft Azure App Service For Linux, classified under Improper Access Control. CVSS score: 10.0/10. Published 2026-07-24.
How severe is CVE-2026-58630?: Critical severity. CVSS v3 base score is 10.0 out of 10.