Microsoft Defender Insufficient Granularity of Access Control Vulnerability
Microsoft — Microsoft Defender Antimalware Platform
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
7.8
6.7%
Vector breakdown
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
- Published
- Apr 14, 2026
- Modified
- Oct 15, 2026
- Added to KEV
- Apr 22, 2026
- Federal patch due
- May 6, 2026
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2026-33825, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2026-33825 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2026-33825?
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-33825?
CVE-2026-33825 has a CVSS base score of 7.8 out of 10 (CVSS 3.1).
Is CVE-2026-33825 actively exploited in the wild?
Yes. CVE-2026-33825 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Apr 22, 2026, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.
What is the EPSS score for CVE-2026-33825?
6.7% - meaning FIRST.org's EPSS model estimates a 6.7% probability this vulnerability will be exploited in the wild within 30 days (94% percentile among all scored CVEs).
What type of vulnerability is CVE-2026-33825?
CVE-2026-33825 is classified under CWE-1220 (CWE-1220: Insufficient Granularity of Access Control).
Cross-checked against
Impactr finds and proves whether CVE-2026-33825 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.