CVEvulnerability
CVE-2026-33825
CISA Known Exploited Vulnerability
Microsoft Defender Insufficient Granularity of Access Control Vulnerability — Microsoft Defender
Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.
- Added to KEV
- 2026-04-22
- Remediation due
- 2026-05-06
- Ransomware use
- Known
- 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.
- Notes
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825 ; https://nvd.nist.gov/vuln/detail/CVE-2026-33825
- Status
- Analyzed
- Published
- 2026-04-14
- Last modified
- 2026-07-24
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-1220
Description
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
Affected configurations
• microsoft defender antimalware platform (< 4.18.26030.3011)
Related
Weakness · CWE (1)
- CWE-1220 Insufficient Granularity of Access Control weakness
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33825 US Government Resource
- https://www.huntress.com/blog/nightmare-eclipse-intrusion Third Party Advisory