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, 08:11 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 2026-10-26.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1607 | Affected
| Fixed in– |
AI-suggested
1. 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. 2. 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. 3. Limit access to Hyper-V management interfaces and services to authorized personnel only, employing strong authentication and access controls. 4. Monitor network traffic and system logs for unusual activity indicative of attempted exploitation or denial of service conditions. 5. Disable or restrict Hyper-V features that are not required to reduce the attack surface. 6. Employ host-based intrusion detection and prevention systems to detect and block suspicious behavior related to Hyper-V operations. 7. Regularly review and update security policies to ensure legacy systems are identified and prioritized for remediation. 8. 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.