CVE-2026-2399 Path traversal in PowerChute™ Serial Shutdown
A path traversal vulnerability allows authenticated Web Admin users to overwrite critical files with text data via a modified REST API request.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2399?
CVE-2026-2399 is a medium-severity path traversal vulnerability in Schneider Electric PowerChute™ Serial Shutdown, published on 14 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability exists that could cause critical files overwritten with text data when a Web Admin user alters the POST /REST/upssleep request payload.
Weakness: CWE-22
Which versions are affected by CVE-2026-2399?
It affects 1 product.
Products include Schneider-Electric Powerchute Serial Shutdown.
How do I fix CVE-2026-2399?
No fix has been published for CVE-2026-2399 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-2399 being exploited?
There is no known exploitation of CVE-2026-2399 in the wild and no public exploit code.
Other vulnerabilities in Schneider Electric PowerChute™ Serial Shutdown
Sources
Also known as GHSA-586j-jr5f-gx4j.