CVE-2025-6444

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Source
https://cve.org/CVERecord?id=CVE-2025-6444
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6444.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-6444
Published
2025-06-25T18:15:24.463Z
Modified
2026-04-10T05:34:34.081503Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/servicestack/servicestack

Affected ranges

Type
GIT
Repo
https://github.com/servicestack/servicestack
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
736c5ebba6f7cd2bda449ab430ad8be58716ebd6
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "8.6"
        }
    ]
}

Affected versions

Other
v3-snapshot
v5
v4.*
v4.0.10-sync
v4.0.17
v4.0.18
v4.0.19
v4.0.20
v4.0.21
v4.0.22
v4.0.23
v4.0.24
v4.0.30
v4.0.31
v4.0.32
v4.0.33
v4.0.34
v4.0.35
v4.0.36
v4.0.38
v4.0.40
v4.0.42
v4.0.44
v4.0.46
v4.0.48
v4.0.50
v4.0.52
v4.0.54
v4.0.56
v4.0.58
v4.0.60
v4.0.62
v4.5.0
v4.5.12
v4.5.2
v4.5.4
v4.5.6
v4.5.8
v5.*
v5.0.2
v5.1.0
v5.10
v5.10.2
v5.10.4
v5.11
v5.12
v5.13
v5.13.2
v5.14
v5.2.0
v5.4
v5.5
v5.6
v5.7
v5.8
v5.9
v5.9.2
v6.*
v6.0
v6.0.2
v6.1
v6.10
v6.11
v6.2
v6.3
v6.4
v6.5
v6.6
v6.7
v6.8
v6.9
v8.*
v8.0
v8.1
v8.1.2
v8.2
v8.3
v8.4
v8.5
v8.5.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6444.json"