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CVE Vulnerability Details :

CVE-2025-6444

PUBLISHED

More Info Official Page

Assigner-zdi

Assigner Org ID-99f1926a-a320-47d8-bbb5-42feb611262e

Published At-25 Jun, 2025 | 17:41

Updated At-25 Jun, 2025 | 18:09

▼CVE Numbering Authority (CNA)

ServiceStack GetErrorResponse Improper Input Validation NTLM Relay Vulnerability

ServiceStack GetErrorResponse Improper Input Validation NTLM Relay Vulnerability. This vulnerability allows remote attackers to relay NTLM credentials on affected installations of ServiceStack. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the implementation of the GetErrorResponse method. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to relay NTLM credentials in the context of the current user. Was ZDI-CAN-25834.

Affected Products

Vendor

ServiceStack

Product

ServiceStack

Default Status

unknown

Versions

Affected

8.4.0

Problem Types

Type	CWE ID	Description
CWE	CWE-20	CWE-20: Improper Input Validation

Metrics

Version	Base score	Base severity	Vector
3.0	5.9	MEDIUM	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Hyperlink	Resource
https://www.zerodayinitiative.com/advisories/ZDI-25-415/	x_research-advisory

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Affected Products

Affected

Problem Types

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References

Affected Products

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References