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CVE-2025-55328VulnerabilityPublished Updated

CVE-2025-55328: Microsoft Windows 10 Version 1507 · Race Condition

Affects Microsoft Windows 10 Version 1507Source CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 2026-10-25.

What to do

Affected software

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

AI-suggested

To mitigate CVE-2025-55328, organizations should: 1) Apply official patches from Microsoft as soon as they become available to address the race condition in Hyper-V. 2) If patching is delayed, restrict local access to systems running Windows 10 Version 1507, especially those with Hyper-V enabled, by enforcing strict access controls and monitoring. 3) Disable Hyper-V on affected systems if virtualization is not required, reducing the attack surface. 4) Employ application whitelisting and endpoint detection and response (EDR) solutions to detect and prevent unauthorized privilege escalation attempts. 5) Regularly audit and update legacy systems, prioritizing upgrades to supported Windows versions with active security updates. 6) Implement network segmentation to limit the impact of potential compromises originating from vulnerable hosts. 7) Educate system administrators about the risks of running outdated OS versions and the importance of timely patch management.

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

References

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