Medium severity · published Apr 14, 2026
CVE-2026-2399
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…
6.1
CVSS
0.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PS
PowerChute™ Serial Shutdown · Schneider Electric
Versions 1.4 and prior · source: vendor
PS
Powerchute Serial Shutdown · Schneider-electric
before 1.5 · source: NVD
In the news
VulnerabilityMedium
Schneider Electric PowerChute Serial Shutdown
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow attackers to overwrite critical files, forge or inject malicious log data, gain unauthorized account access, trigger denial‑of‑service conditions, truncate or alter logging information, reset user credentials, or expose sensitive information.
The following versions of Schneider Electric PowerChute Serial Shutdown are affected:
PowerChute Serial Shutdown <=1.4
CVSS
Vendor
Equipment
Vulnerabilities
v3 6.1
SuSE, Schneider Electric, Red Hat, Microsoft
Schneider Electric PowerChute Serial Shutdown
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Improper Encoding or Escaping of Output, Improper Restriction of Excessive Authentication Attempts, Uncontrolled Resource Consumption, Improper Validation of Specified Quantity in Input, Improper Neutralization of CRLF Sequences ('CRLF Injection'), Insertion of Sensitive Information into Log File
Background
Critical Infrastructure Sectors: Communications, Critical Manufacturing, Energy, Healthcare and Public Health, Information Technology, Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: France
Vulnerabilities
Expand All +
CVE-2026-2399
PowerChute is vulnerable to improper restriction of file paths, which could allow critical system files to be overwritten with unintended data.
View CVE ...
Jul 9, 2026·CISA Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2399
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2399
Vendor Advisory
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-104-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2026-104-01.pdf
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