ByteOS Network

NVD Vulnerability Details :

CVE-2025-6444

Analyzed

Source-zdi-disclosures@trendmicro.com

Published At-25 Jun, 2025 | 18:15

Updated At-08 Aug, 2025 | 19:18

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.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Primary	3.1	5.9	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Secondary	3.0	5.9	MEDIUM	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CPE Matches

servicestack>>servicestack>>Versions before 8.6(exclusive)

cpe:2.3:a:servicestack:servicestack:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-20	Primary	zdi-disclosures@trendmicro.com

References

Hyperlink	Source	Resource
https://www.zerodayinitiative.com/advisories/ZDI-25-415/	zdi-disclosures@trendmicro.com	Third Party Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History