CVE-2026-2399 — MEDIUM (6.1)

Q: How severe is CVE-2026-2399?

CVE-2026-2399 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-2399?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Powerchute Serial Shutdown.

Vulnerability 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.

CVSS Score

6.1

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Schneider-Electric	Powerchute Serial Shutdown	< 1.5

Related Weaknesses (CWE)

CWE-22

References

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-104-01&p_enDocVendor Advisory

FAQ

What is CVE-2026-2399?

CVE-2026-2399 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 P...

How severe is CVE-2026-2399?

CVE-2026-2399 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-2399?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Powerchute Serial Shutdown.