Summary
DSInternals Credential Roaming Elevation of Privilege Vulnerability
Exploitability
The vulnerability can be exploited under the following circumstances:
- An attacker is able to modify the
msPKIAccountCredentialsattribute of a user account in Active Directory. This attribute is used by the Credential Roaming feature of Windows and each AD user can modify their own roamed credentials. AND - A 3rd party application uses the
DSInternals.Commonlibrary to export roamed credentials from Active Directory to a file system. AND - The application has administrative privileges on the local system.
The probability of any 3rd-party product using the DSInternals.Common library being affected by this vulnerability is extremely low.
References
https://www.mandiant.com/resources/blog/apt29-windows-credential-roaming
Impact
A vulnerability exists in the DSInternals.Common.Data.RoamedCredential.Save() method, which incorrectly parses the msPKIAccountCredentials LDAP attribute values. As a consequence, a malicious actor would be able to modify the file system of the computer where an application using this function is executed with administrative privileges.
A similar security issue used to be present in the Windows operating system, as DSInternals re-implements the Credential Roaming feature of Windows.
GHSA-VX2X-9CFF-FHJW has a CVSS score of 6.3 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.8); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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The issue had been fixed in DSInternals 4.8.
Frequently Asked Questions
- What is GHSA-VX2X-9CFF-FHJW? GHSA-VX2X-9CFF-FHJW is a medium-severity security vulnerability in DSInternals.Common (nuget), affecting versions >= 2.21, < 4.8. It is fixed in 4.8.
- How severe is GHSA-VX2X-9CFF-FHJW? GHSA-VX2X-9CFF-FHJW has a CVSS score of 6.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of DSInternals.Common are affected by GHSA-VX2X-9CFF-FHJW? DSInternals.Common (nuget) versions >= 2.21, < 4.8 is affected.
- Is there a fix for GHSA-VX2X-9CFF-FHJW? Yes. GHSA-VX2X-9CFF-FHJW is fixed in 4.8. Upgrade to this version or later.
- Is GHSA-VX2X-9CFF-FHJW exploitable, and should I be worried? Whether GHSA-VX2X-9CFF-FHJW is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-VX2X-9CFF-FHJW is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-VX2X-9CFF-FHJW? Upgrade
DSInternals.Commonto 4.8 or later.