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CVE-2025-54091VulnerabilityPublished Updated

CVE-2025-54091: Microsoft Windows 10 Version 1507 · Integer Overflow or Wraparound

Affects Microsoft Windows 10 Version 1507Source CVE Database V5

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 39% 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 9 Sep 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 2026-10-26.

What to do

Affected software

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

AI-suggested

To mitigate CVE-2025-54091, organizations should prioritize upgrading affected systems to a supported and patched version of Windows 10 or later, as Windows 10 Version 1507 is outdated and no longer supported by Microsoft. If upgrading is not immediately feasible, restrict local access to systems running this version, ensuring only trusted and authorized personnel have login privileges. Disable Hyper-V if virtualization is not required, reducing the attack surface. Employ strict access controls and monitoring on systems with Hyper-V enabled to detect suspicious privilege escalation attempts. Use endpoint detection and response (EDR) tools to monitor for anomalous behavior indicative of exploitation. Regularly audit local user accounts and privileges to minimize the number of users with elevated rights. Stay informed on Microsoft security advisories for any forthcoming patches or workarounds related to this vulnerability. Finally, implement network segmentation to isolate legacy systems from critical infrastructure to limit potential lateral movement.

Description

Integer overflow or wraparound in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

References

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