High severity · published Aug 20, 2026
CVE-2026-69558
Microsoft Partner Center Information Disclosure Vulnerability
8.6
CVSS
1%
EPSS
No
On KEV
Description
Authorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker to disclose information over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% 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-2026-69558
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-69558
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69558
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