What is CVE-2026-59118?

CVE-2026-59118 is a critical-severity vulnerability in Microsoft Power Apps, classified under Improper Authorization. CVSS score: 9.3/10. Published 2026-08-07.

How severe is CVE-2026-59118?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Auth bypass in Microsoft Power Apps

CVE-2026-59118

Improper authorization in Microsoft Power Apps allows an unauthorized attacker to elevate privileges over a network.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

Affected products

Microsoft Power Apps
Microsoft Power_apps

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

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

Frequently asked questions

What is CVE-2026-59118?: CVE-2026-59118 is a critical-severity vulnerability in Microsoft Power Apps, classified under Improper Authorization. CVSS score: 9.3/10. Published 2026-08-07.
How severe is CVE-2026-59118?: Critical severity. CVSS v3 base score is 9.3 out of 10.