CVE-2025-33073: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-23T21:33:43.721Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical Summary

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.

• Context preserved from previous revision: 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. 1. Use only isolated environments and systems you own or are explicitly authorized to test.

Technical Details

• CVE: CVE-2025-33073
• KEV date added: 2025-10-20
• KEV due date: 2025-11-10
• NVD published: Unknown
• NVD modified: Unknown
• MITRE modified: 2026-02-26
• CVSS base score: N/A
• CVSS vector: N/A
• CVSS exploitability score: N/A
• CVSS impact score: N/A
• Attack vector: Unknown
• Attack complexity: Unknown
• Privileges required: Unknown
• User interaction: Unknown
• Scope: Unknown
• Confidentiality impact: Unknown
• Integrity impact: Unknown
• Availability impact: Unknown

Versions and Products Impacted

• Microsoft / Windows 10 Version 1507 (versions: 10.0.10240.0)
• Microsoft / Windows 10 Version 1607 (versions: 10.0.14393.0)
• Microsoft / Windows 10 Version 1809 (versions: 10.0.17763.0)
• Microsoft / Windows 10 Version 21H2 (versions: 10.0.19044.0)
• Microsoft / Windows 10 Version 22H2 (versions: 10.0.19045.0)
• Microsoft / Windows 11 version 22H2 (versions: 10.0.22621.0)
• Microsoft / Windows 11 version 22H3 (versions: 10.0.22631.0)
• Microsoft / Windows 11 Version 23H2 (versions: 10.0.22631.0)
• Microsoft / Windows 11 Version 24H2 (versions: 10.0.26100.0)
• Microsoft / Windows Server 2008 R2 Service Pack 1 (versions: 6.1.7601.0)
• Microsoft / Windows Server 2008 R2 Service Pack 1 (Server Core installation) (versions: 6.1.7601.0)
• Microsoft / Windows Server 2008 Service Pack 2 (versions: 6.0.6003.0)
• Microsoft / Windows Server 2008 Service Pack 2 (Server Core installation) (versions: 6.0.6003.0)
• Microsoft / Windows Server 2012 (versions: 6.2.9200.0)
• Microsoft / Windows Server 2012 (Server Core installation) (versions: 6.2.9200.0)
• Microsoft / Windows Server 2012 R2 (versions: 6.3.9600.0)
• Microsoft / Windows Server 2012 R2 (Server Core installation) (versions: 6.3.9600.0)
• Microsoft / Windows Server 2016 (versions: 10.0.14393.0)
• Microsoft / Windows Server 2016 (Server Core installation) (versions: 10.0.14393.0)
• Microsoft / Windows Server 2019 (versions: 10.0.17763.0)

Weakness Classification

• Weakness class not explicitly listed by upstream feeds.

Repositories for Lab Validation (Public Examples)

• 0xMarcio/cve | stars: 1177 | updated: 2026-03-23 | https://github.com/0xMarcio/cve
  Notes: Latest CVEs with their Proof of Concept exploits.
• GhostTroops/TOP | stars: 720 | updated: 2026-03-23 | https://github.com/GhostTroops/TOP
  Notes: TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things
• cgmondejar/programmatic-vulnerability-remediations | stars: 0 | updated: 2026-03-21 | https://github.com/cgmondejar/programmatic-vulnerability-remediations

People and Organizations Mentioned

• microsoft
• Windows
• 0xMarcio
• GhostTroops
• cgmondejar

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Use Microsoft / Windows 10 Version 1507 (versions: 10.0.10240.0) in isolated VM snapshots (vulnerable vs patched) and compare process tree telemetry before/after updates.
4. Validate command-execution prevention policies (AppLocker/WDAC/EDR) with harmless test binaries only.
5. Create SIEM detections for suspicious parent-child chains, encoded command usage, and abnormal service creation.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2025-33073
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2025-33073
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• KEV notes: https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-33073 ; https://nvd.nist.gov/vuln/detail/CVE-2025-33073
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33073
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-33073
• https://www.vicarius.io/vsociety/posts/cve-2025-33073-detection-script-improper-access-control-in-windows-smb-affects-microsoft-products
• https://www.vicarius.io/vsociety/posts/cve-2025-33073-mitigation-script-improper-access-control-in-windows-smb-affects-microsoft-products
• Repository example: https://github.com/0xMarcio/cve
• Repository example: https://github.com/GhostTroops/TOP
• Repository example: https://github.com/cgmondejar/programmatic-vulnerability-remediations

This content is for defensive security training and authorized validation only.