Vulnerability · Published Jul 8, 2025 · Assigned by microsoft
CVE-2025-47978Windows Kerberos Denial of Service Vulnerability
Medium 6.5
In plain English
A medium-severity out-of-bounds read in Windows Server 2022 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)2.1%top 17.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.3932 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – before 10.0.25398.1732 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.4652 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.4652 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
References
- Windows Kerberos Denial of Service Vulnerability vendor-advisory, patch