CVE-2026-56155
high · 7.8Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
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.
Insufficient granularity of access control in Active Directory Federation Services (AD FS) allows an authorized attacker to elevate privileges locally.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| microsoft | windows_10_1607 | < 10.0.14393.9339 |
| microsoft | windows_10_1607 | < 10.0.14393.9339 |
| microsoft | windows_10_1809 | < 10.0.17763.9020 |
| microsoft | windows_10_1809 | < 10.0.17763.9020 |
| microsoft | windows_server_2012 | all versions |
| microsoft | windows_server_2012 | r2 |
| microsoft | windows_server_2016 | < 10.0.14393.9339 |
| microsoft | windows_server_2019 | < 10.0.17763.9020 |
| microsoft | windows_server_2022 | < 10.0.20348.5386 |
| microsoft | windows_server_2025 | < 10.0.26100.33158 |
Check a specific version with /api/v1/cve/match.
References
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-56155