Out-of-bounds Read in Microsoft Windows Server 2022
CVE-2025-47978
Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network.
Vulnerability class: Buffer Overflow
EPSS: 0.019 (77.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Microsoft Windows Server 2022 — versions 10.0.20348.0
- Microsoft Windows_server_2022
- Microsoft Windows_server_2022_23h2
- Microsoft Windows Server 2022, 23h2 Edition (Server Core Installation) — versions 10.0.25398.0
- Microsoft Windows Server 2025 — versions 10.0.26100.0
- Microsoft Windows_server_2025
- Microsoft Windows Server 2025 (Server Core Installation) — versions 10.0.26100.0
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-47978?
- CVE-2025-47978 is a medium-severity vulnerability in Microsoft Windows Server 2022, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2025-07-08.
- How severe is CVE-2025-47978?
- Medium severity. CVSS v3 base score is 6.5 out of 10.