Weakness (CWE)
CWE-1220: Insufficient Granularity of Access Control
The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack the required granularity
How to prevent it (1 mitigation)
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Architecture and Design, Implementation, Testing
- Access-control-policy protections must be reviewed for design inconsistency and common weaknesses.
- Access-control-policy definition and programming flow must be tested in pre-silicon, post-silicon testing.
Source: MITRE CWE-1220
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High 7.8CVE-2026-56155 Exploited
Active Directory Federation Services Elevation of Privilege Vulnerability
Insufficient granularity of access control in Active Directory Federation Services (AD FS) allows an authorized attacker to elevate privileges locally.
KEV Jul 14, 2026 -
High 7.8
Microsoft Defender Elevation of Privilege Vulnerability
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
KEV Apr 22, 2026 -
Critical 9.8
This issue was addressed by removing the vulnerable code. This issue is fixed in iOS 18.4.1 and iPadOS 18.4.1, macOS Se…
KEV Apr 17, 2025