Denial of service in Microsoft Windows Kerberos



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-47978
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU112700

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-47978

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in Windows Kerberos. A remote user can trigger an out-of-bounds read error and cause a denial of service condition on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2022 10.0.20348.202 - 2025 10.0.26100.4349

CPE2.3 External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47978


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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