CVE-2026-4387 Unencrypted storage of authentication state in StrongDM Desktop Application state.kv file
Local attackers can read cleartext authentication tokens and keys from the state file, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4387?
CVE-2026-4387 is a low-severity vulnerability in StrongDM Desktop Application, published on 29 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
StrongDM Desktop Application before 23.74.0 (Desktop Client before 53.77.0) on Microsoft Windows stores authentication state, including a JSON Web Token and asymmetric key material, in cleartext in a per-user state file located at C:\Users\<username>\.sdm\state.kv. The file is protected only by default user-level NTFS permissions.
Exploitation requires local read access to the affected user's profile directory and additional deployment and execution conditions on the target host.
The condition was reported through coordinated disclosure by Hope Walker (SpecterOps).
Which versions are affected by CVE-2026-4387?
How do I fix CVE-2026-4387?
No fix has been published for CVE-2026-4387 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4387 being exploited?
There is no known exploitation of CVE-2026-4387 in the wild and no public exploit code.
Sources
Also known as GHSA-qgjm-4mg2-6wm5.