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VulnerabilityPublished Updated

CVE-2025-59259: Microsoft Windows 10 Version 1507 · Improper Validation of Specified Type of Input

Affects Microsoft Windows 10 Version 1507Source CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.5% chance of exploitation in 30 days – higher than 74% 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:N/I:N/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Windows 10 Version 1507Affected
  • =10.0.10240.0
Fixed in–

AI-suggested

  1. Upgrade affected systems from Windows 10 Version 1507 to a supported and fully patched Windows version to eliminate exposure to this vulnerability.
  2. Until upgrades are possible, restrict network access to vulnerable systems, especially limiting access to the Local Session Manager service ports and protocols.
  3. Implement strict internal access controls to minimize the number of users with privileges required to exploit this vulnerability.
  4. Monitor network traffic and system logs for unusual activity related to LSM or session management services that could indicate exploitation attempts.
  5. Employ network segmentation to isolate legacy systems from critical infrastructure and reduce potential attack vectors.
  6. Stay alert for official patches or security advisories from Microsoft and apply them promptly once available.
  7. Conduct regular vulnerability assessments and penetration testing focused on legacy systems to identify and remediate weaknesses proactively.

Description

Improper validation of specified type of input in Windows Local Session Manager (LSM) allows an authorized attacker to deny service over a network.

References

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