CVE-2025-49751
MEDIUMDescription
Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 37% of all known CVEs.
References
Related Vulnerabilities
Other CWE-820 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-2801 | High | 7.5 | 0.7% | - | Fix |
| CVE-2024-49114 | High | 7.8 | 0.7% | - | Fix |
| CVE-2025-47154 | Critical | 9.0 | 0.7% | - | - |
| CVE-2025-47999 | Medium | 6.8 | 0.4% | - | Fix |
| CVE-2025-1445 | High | 7.5 | 0.3% | - | - |
| CVE-2026-44318 | Medium | 6.5 | 0.3% | - | Fix |
Common questions
How do I fix CVE-2025-49751?
Published advisories record a fix for 16 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2025-49751 being actively exploited?
Not that we know of. CVE-2025-49751 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.46% is the estimated probability that it will be exploited in the next 30 days. That is higher than 37% of all scored CVEs.
How severe is CVE-2025-49751?
CVE-2025-49751 has a CVSS v3 base score of 6.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2025-49751 affect?
Published advisories record a fix for Windows 10 Version 1607 (Windows), Windows 10 Version 1809 (Windows), Windows 10 Version 21H2 (Windows), Windows 10 Version 22H2 (Windows), and 12 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-08-15.