CVE-2025-33073: Microsoft Windows 10 Version 1507 · Improper Access Control
Affects Microsoft Windows 10 Version 1507Source CVE Database V5
Exploited in the wild · KEV due 10 Nov 2025 · public exploit available (Exploit-DB) · 82% EPSS : apply the vendor's fix or mitigations to Microsoft Windows 10 Version 1507 now.
Data as of 26 Oct 2026, 08:30 UTC
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else.
- EPSS
- 82.6% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:CExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 10 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: evidence found.
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 132 days after disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by Microsoft Corporation
, 56 days before disclosure
CVE published
on cve.org
, t = 0
In Threat Radar
record ingested
, 2 hours after disclosure
First Exploit-DB entry (opens in a new tab)
Windows 11 SMB Client - Privilege Escalation & Remote Code Execution (RCE)
, 5 days after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, 132 days after disclosure
KEV remediation due
US federal deadline
, 153 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1507 | Affected
| Fixed in– |
Description
CVE-2025-33073 is a high-severity vulnerability in Microsoft Windows 10 Version 1507 involving improper access control in the SMB protocol. It allows an authorized attacker to elevate privileges over a network without requiring user interaction. The vulnerability has a CVSS score of 8.8, indicating a significant impact on confidentiality, integrity, and availability. No patch or remediation information is currently provided by the vendor. There are no known exploits in the wild at this time.
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33073 (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-33073 (opens in a new tab)
- vicarius.io/vsociety/posts/cve-2025-33073-detection-script-improper-access-control-in-windows-smb-affects-microsoft-products (opens in a new tab)
- vicarius.io/vsociety/posts/cve-2025-33073-mitigation-script-improper-access-control-in-windows-smb-affects-microsoft-products (opens in a new tab)