What is CVE-2026-24303?

CVE-2026-24303 is a critical-severity vulnerability in Microsoft Partner Center, classified under Improper Access Control. CVSS score: 9.6/10. Published 2026-04-23.

How severe is CVE-2026-24303?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Vulnerability in Microsoft Partner Center

CVE-2026-24303

Improper access control in Microsoft Partner Center allows an authorized attacker to elevate privileges over a network.

EPSS: 0.001 (19.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

Microsoft Partner Center
Microsoft Partner_center

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

Microsoft Partner Center Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-24303?: CVE-2026-24303 is a critical-severity vulnerability in Microsoft Partner Center, classified under Improper Access Control. CVSS score: 9.6/10. Published 2026-04-23.
How severe is CVE-2026-24303?: Critical severity. CVSS v3 base score is 9.6 out of 10.