ServiceStack FindType Directory Traversal Remote Code Execution Vulnerability

published 2025-06-25 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-19131

cvss: 8.1; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

ServiceStack FindType Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code 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 FindType method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25837.

Patch / fix

fixed in 1

servicestack servicestack 8.6

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 16 mo ago (2025-06-25)

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	8.1	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

ServiceStack ServiceStack

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

docs.servicestack.net /releases/v8_06#reported-vulnerabilities
vendor-advisory, release-notes
zerodayinitiative.com /advisories/ZDI-25-416/
third-party-advisory

Sources

CVE List CVE-2025-6445
NVD CVE-2025-6445

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary