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CVE-2025-59508VulnerabilityPublished Updated

CVE-2025-59508: 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
Microsoftmicrosoft/windows_10pkg:rpm/microsoft/windows_10Other threatsAffected
  • =10.0.14393.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

1. Upgrade affected systems to a supported and patched version of Windows 10 or later, as Windows 10 Version 1607 is legacy and may no longer receive security updates. 2. If upgrading is not immediately feasible, implement strict local access controls and limit the number of users with local login rights to reduce the risk of exploitation. 3. Employ application whitelisting and endpoint detection and response (EDR) solutions to monitor and block suspicious privilege escalation attempts. 4. Use system hardening techniques such as disabling unnecessary services, including Windows Speech if not required, to reduce the attack surface. 5. Monitor system logs for unusual behavior indicative of race condition exploitation or privilege escalation attempts. 6. Develop and test incident response plans specifically addressing local privilege escalation scenarios. 7. Engage with Microsoft support or security advisories for any forthcoming patches or workarounds related to this CVE. 8. Educate users about the risks of local privilege escalation and enforce least privilege principles to minimize potential damage.

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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