SB2025120978 - Denial of service in Microsoft Windows Hyper-V
Published: December 9, 2025
Security Bulletin ID
SB2025120978
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer underflow (CVE-ID: CVE-2025-62567)
CWE-ID: CWE-191 - Integer underflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to integer underflow in Windows Hyper-V. A remote user can send a specially crafted request to the affected application, trigger integer underflow and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.