CVE-2025-47978 json
Windows Kerberos Denial of Service Vulnerability
published 2025-07-08 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-20613
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
Out-of-bounds read in Windows Kerberos allows an authorized attacker to deny service over a network.
Patch / fix
- Microsoft Windows Server 2022 10.0.20348.3932
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1732
- Microsoft Windows Server 2025 10.0.26100.4652
- Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.4652
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
2.15% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | 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 |
| CNA | 3.1 | 6.5 | 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
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core installation)
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2025-47978
vendor-advisory, patch
Sources
- CVE List CVE-2025-47978
- NVD CVE-2025-47978
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