CVE-2025-33056: Microsoft Windows 10 Version 1507 · Improper Access Control
Affects Microsoft Windows 10 Version 1507Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 1.6% chance of exploitation in 30 days – higher than 76% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 10 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1507 | Affected
| Fixed in– |
AI-suggested
Since no official patches are currently available, organizations should prioritize upgrading affected systems from Windows 10 Version 1507 to a supported and patched Windows version to eliminate exposure. In the interim, network-level mitigations such as restricting inbound access to the lsasrv service ports through firewalls or network segmentation can reduce exposure. Monitoring network traffic for unusual or malformed packets targeting lsasrv may help detect exploitation attempts. Employing intrusion detection/prevention systems (IDS/IPS) with updated signatures can provide additional protection. Administrators should audit their environment to identify any remaining systems running this legacy OS version and plan for rapid remediation. Applying strict access control policies and limiting exposure of vulnerable systems to untrusted networks will reduce risk. Regularly checking Microsoft security advisories for patches or workarounds is essential. Finally, implementing robust incident response plans to quickly address potential denial of service incidents will help minimize operational impact.
Description
Improper access control in Microsoft Local Security Authority Server (lsasrv) allows an unauthorized attacker to deny service over a network.