CVE-2026-56155

Severity not reported CISA KEV

Data quality: kev only. This record comes from the CISA KEV catalog only; NVD details have not been synced yet.

Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability

Vendor / product: 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.

CVSS

—

Not reported by the source

Timeline (UTC)

Published: not reported

Modified: not reported

NVD status: not reported

Last synced 2 days ago

Verified against the source API 2026-10-27 06:50 UTC

Exploitation

Listed in CISA KEV

Added 2026-07-14 · due 2026-07-28

Known ransomware use: Unknown

Required action (CISA)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-1220

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

No references reported.

Data sources

CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗

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