Critical severity · published Apr 23, 2026
CVE-2026-24303
Microsoft Partner Center Elevation of Privilege Vulnerability
9.6
CVSS
0.4%
EPSS
No
On KEV
Description
Improper certificate validation in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MP
Microsoft Partner Center · Microsoft
All versions, or not specified · source: vendor
PC
Partner Center · Microsoft
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24303
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-24303
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24303
More from Microsoft Partner Center
9.8
CVE-2024-49035
Partner.Microsoft.Com Elevation of Privilege Vulnerability
10.0
CVE-2026-96207
Microsoft Partner Center Elevation of Privilege Vulnerability
9.8
CVE-2025-65041
Microsoft Partner Center Elevation of Privilege Vulnerability
8.8
CVE-2025-29814
Microsoft Partner Center Elevation of Privilege Vulnerability
8.6
CVE-2026-69558
Microsoft Partner Center Information Disclosure Vulnerability