CVE-2025-47999: Microsoft Windows 10 Version 1607 · Missing Synchronization
Affects Microsoft Windows 10 Version 1607Source CVE Database V5
Not known to be exploited · CVSS 6.8 Medium.
Data as of 26 Oct 2026, 11:42 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:CExploitation evidence
Disclosed: evidence found.
CVE published 8 Jul 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1607 | Affected
| Fixed in– |
AI-suggested
- Upgrade affected systems to a supported and fully patched version of Windows 10 or later, as Windows 10 Version 1607 is legacy and no longer receives mainstream support.
- If immediate upgrade is not feasible, implement strict network segmentation to isolate Hyper-V hosts from untrusted or less secure network segments, reducing the risk of adjacent network attacks.
- Limit access to Hyper-V management interfaces and services to authorized personnel only, employing strong authentication and access controls.
- Monitor network traffic and system logs for unusual activity indicative of attempted exploitation or denial of service conditions.
- Disable or restrict Hyper-V features that are not required to reduce the attack surface.
- Employ host-based intrusion detection and prevention systems to detect and block suspicious behavior related to Hyper-V operations.
- Regularly review and update security policies to ensure legacy systems are identified and prioritized for remediation.
- Engage with Microsoft support or security advisories for any forthcoming patches or workarounds addressing this vulnerability.
Description
Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.