CVE

CVE-2026-33825

P1⬤ KNOWN RANSOMWARE USE

Microsoft Defender Insufficient Granularity of Access Control Vulnerability

Microsoft · Defender

Date added (CISA)

2026-04-22

Remediation due

2026-05-06

Known ransomware use

Yes

Remediation priority

P1 — known ransomware use · past CISA due date

Associated with

Related to

Qilin (fka Agenda) · QilincampaignCorrelated cluster2026-09-17

Description

Microsoft Defender contains an insufficient granularity of access control vulnerability that could allow an authorized attacker to escalate privileges locally.

Source: NVD ↗ · CISA KEV Catalog ↗