Vulnerability details
CVE-2026-33825
Actively exploited
Microsoft Defender Antimalware Platform
Microsoft Defender Elevation of Privilege Vulnerability
CVSS 3.1
7.8High
Official description
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (microsoft) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Microsoft | Microsoft Defender Antimalware Platform | 4.0.0.0 ≤ v < 4.18.26030.3011 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825 vendor-advisorypatch
- https://www.huntress.com/blog/nightmare-eclipse-intrusion third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33825 government-resource
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Details
- Published
- 2026-04-14
- Last updated
- 2026-10-15
- State
- Published
- Assigner (CNA)
- microsoft
- Kolun priority
- 85 · Critical
CISA KEV catalog
- Date added
- 2026-04-22
- Due date
- 2026-05-06
- Used in ransomware
- Yes
Exploit prediction (EPSS)
6.74%
Probability of exploitation in 30 days
93.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-1220Insufficient Granularity of Access Control