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CVE-2025-59507VulnerabilityPublished Updated

CVE-2025-59507: Microsoft Windows 10 Version 1607 · Race Condition

Affects Microsoft Windows 10 Version 1607Source CVE Database V5

0

Not known to be exploited · CVSS 7.0 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
7.0High
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:H/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 11 Nov 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 1607Affected
  • =10.0.14393.0
Fixed in–

AI-suggested

Given the absence of an official patch, organizations should implement the following specific mitigations: 1) Restrict local access to Windows 10 Version 1607 systems by enforcing strict access controls and limiting user privileges to the minimum necessary. 2) Employ application whitelisting and endpoint detection and response (EDR) solutions to monitor and block suspicious behavior indicative of race condition exploitation attempts. 3) Isolate legacy systems from critical network segments to reduce the attack surface and lateral movement opportunities. 4) Conduct thorough auditing and monitoring of Windows Speech service usage and related system logs to detect anomalies. 5) Where feasible, accelerate migration off Windows 10 Version 1607 to supported versions with active security updates. 6) Use virtualization or sandboxing techniques to contain potential exploit attempts. 7) Educate system administrators about the vulnerability and the importance of minimizing privileged local accounts. These targeted actions go beyond generic advice by focusing on access control, monitoring, and network segmentation specific to the affected component and environment.

Description

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

References

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