October 8, 2026

CVE Watchtower

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CVE-2026-56155NVD

Vulnerability Summary

Insufficient granularity of access control in Active Directory Federation Services (AD FS) allows an authorized attacker to elevate privileges locally.
Severity Level
HIGH(7.8)
Published Date
Jul 14, 2026
Last Modified
Jul 15, 2026
Exploitation Status
ACTIVE
EPSS Score (30-Day)
2.33%Probability
Root Weakness (CWE)
CWE-1220: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 7.8 (HIGH)
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Microsoft Windows 10 1607 < 10.0.14393.9339
  • Microsoft Windows 10 1809 < 10.0.17763.9020
  • Microsoft Windows Server 2012
  • 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
Patched Versions
  • Microsoft Windows 10 1607 10.0.14393.9339
  • Microsoft Windows 10 1809 10.0.17763.9020
  • 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
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References