Microsoft Windows SMB Client Improper Access Control Vulnerability
Microsoft — Windows 10 Version 1507
Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
8.8
80.5%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- Jun 10, 2025
- Modified
- Jun 17, 2026
- Added to KEV
- Oct 20, 2025
- Federal patch due
- Nov 10, 2025
CISA 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.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
8 foundWeaponization
Public repositories whose name or description references CVE-2025-33073, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
- mverschu/CVE-2025-33073★ 716
PoC Exploit for the NTLM reflection SMB flaw.
updated Sep 2, 2026
- uziii2208/CVE-2025-33073★ 67
Universal exploitation tool for CVE-2025-33073 targeting Windows Domain Controllers with DNSAdmins privileges and WinRM enabled.
updated Aug 7, 2026
- SFRDevelopment/windows-smb-vulnerability-framework-cve-2025-33073★ 6
Proof-of-Concept
updated Jul 18, 2026
- EgCupCake/cupntlm-Automated-Exploit-For-CVE-2025-33073-★ 3
cupntlm
updated Jul 9, 2026
- obscura-cert/CVE-2025-33073★ 1
updated Jul 4, 2025
- cve-2025-33073/ServicoSystemD★ 1
Cria um serviço no systemd do Linux
updated Feb 22, 2023
- cve-2025-33073/RecebimentoEspiao★ 1
Mando sua tela pra outro computador ver
updated Feb 22, 2023
- irjfifndn-prog/Blackash-CVE-2025-33073★ 0
CVE-2025-33073
updated Nov 17, 2025
References
How this class of flaw gets exploited
Frequently asked questions
What is CVE-2025-33073?
Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
How severe is CVE-2025-33073?
CVE-2025-33073 has a CVSS base score of 8.8 out of 10 (CVSS 3.1).
Is CVE-2025-33073 actively exploited in the wild?
Yes. CVE-2025-33073 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Oct 20, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-33073?
80.5% - meaning FIRST.org's EPSS model estimates a 80.5% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2025-33073?
We found 8 public GitHub repositories referencing CVE-2025-33073, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2025-33073?
CVE-2025-33073 is classified under CWE-284 (CWE-284: Improper Access Control).
Cross-checked against
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