CVE-2026-33825 · netVigilance record NV26-0094
Microsoft Defender Insufficient Granularity of Access Control
past due ransomware
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2026-05-06 · passed 4 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.
Who is affected
Microsoft Defender. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-1220.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 4 months ago
Sources
- NVD entry for CVE-2026-33825 nvd.nist.gov/vuln/detail/CVE-2026-33825
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- msrc.microsoft.com msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2026-33825