CVE-2026-56155
Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability
Summary
Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally.
Affected software
Vendor: Microsoft · Product: Active Directory Federation Services
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Microsoft
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|---|---|---|---|
| CVE-2021-34473 | Microsoft Exchange Server Remote Code Execution Vulnerability | 100.0% | Yes |
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| CVE-2019-0708 | Microsoft Remote Desktop Services Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2015-1635 | Microsoft HTTP.sys Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2021-34523 | Microsoft Exchange Server Privilege Escalation Vulnerability | 100.0% | Yes |
| CVE-2022-41082 | Microsoft Exchange Server Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2012-0158 | Microsoft MSCOMCTL.OCX Remote Code Execution Vulnerability | 100.0% | Yes |
| CVE-2020-0688 | Microsoft Exchange Server Validation Key Remote Code Execution Vulnerability | 100.0% | Yes |
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