Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability

Microsoft Active Directory Federation Services

Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally. Added to CISA KEV on 2026-07-14 (federal deadline 2026-07-28).

First seen: 14 Jul 2026
Last update: 14 Jul 2026, 12:00 UTC
Identifiers: CVE-2026-56155
Source: CISA KEV

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: Microsoft Active Directory Federation Services
Ids: CVE-2026-56155

Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally. Added to CISA KEV on 2026-07-14 (federal deadline 2026-07-28).

## Steps
1. Search the repo, its CI and infra config for Microsoft Active Directory Federation Services. If present, report the version in use and whether it's affected.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-56155") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://learn.microsoft.com/en-us/windows-server/identity/ad-fs/decommission/adfs-decommission-guide https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-56155 https://nvd.nist.gov/vuln/detail/CVE-2026-56155
https://pwned.coffee/i/microsoft-active-directory-federation-services-insuffici-cve-2026-56155

Sources

Totalone hot coffee