CVE-2025-33073
Microsoft Windows SMB Client Improper Access Control Vulnerability
IN CISA KEV
Microsoft Windows SMB Client contains an improper access control vulnerability that could allow for privilege escalation. An attacker could execute a specially crafted malicious script to coerce the victim machine to connect back to the attack system using SMB and authenticate.
- Vendor
- Microsoft
- Product
- Windows
- CVSS
- No score recorded (no NVD record loaded for this entry)
- CWE
- CWE-284
- Published
- Not recorded
- NVD modified
- Not recorded
CISA KEV
- Date added
- 2025-10-20
- Due date
- 2025-11-10
- Ransomware use
- Unknown
- 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.
EPSS
82.7% chance of exploitation in the next 30 days (percentile 99th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.