CVE-2026-33825: listed in the CISA KEV catalog

CVE-2026-33825 · CVSS 7.8 HIGH · KEV 2026-04-22 · patch available

Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.

Is CVE-2026-33825 exploited?

• Listed in the CISA KEV catalog on 2026-04-22.
• Federal remediation due 2026-05-06.
• Past that date by 147 days.
• Public exploit code: none found in monitored sources.

Which products and versions are affected?

• Microsoft · Microsoft Defender Antimalware Platform · < 4.18.26030.3011

Is there a patch?

• Release Notes

What PlainSec published about CVE-2026-33825

• Defender Flaw Becomes Ransomware’s Privilege Shortcut (2026-07-01)
• Defender’s file rewrite turns patched PCs into SYSTEM targets (2026-04-18)

Primary sources

• NVD record
• CISA KEV catalog

What this record does not say

• No EPSS score.

KEV and EPSS are re-checked daily. Record last updated 2026-08-11.