Overview
CVE-2026-33825 has been added to the CISA Known Exploited Vulnerabilities catalog. Published on April 14, 2026. Threat actors are actively exploiting this vulnerability in real-world attacks.
Insufficient granularity of access control in Microsoft Defender allows an authorized attacker to elevate privileges locally.
Threat Intelligence
| Metric | Value |
|---|---|
| CVE ID | CVE-2026-33825 |
| Severity | HIGH |
| CVSS Score | 0.0/10 |
| CISA KEV | ✅ Yes — Actively Exploited |
| KEV Date Added | April 22, 2026 |
| Remediation Deadline | May 06, 2026 |
| EPSS Score | 6.7% exploit probability |
| EPSS Percentile | Top 99% of all CVEs |
Why This Matters
This vulnerability has been added to the CISA Known Exploited Vulnerabilities (KEV) catalog, which means threat actors are actively exploiting it in real-world attacks.
Federal agencies are required to remediate by May 06, 2026. All organizations should treat this deadline as a strong recommendation.
Recommended Actions
- Verify exposure — Determine if your environment uses the affected software.
- Apply patches — Update to the latest version as soon as a fix is available.
- Monitor for compromise — Check logs for unusual activity.
- Meet the deadline — CISA recommends remediation by May 06, 2026.
References
CVE data aggregated from the National Vulnerability Database (NVD), CISA Known Exploited Vulnerabilities catalog, and FIRST EPSS. Analysis updated as new intelligence becomes available. Last updated: 2026-04-23.