Eaton UPS Companion Installer Quotation Flaw Allows RCE
CVE-2025-59888 Published on December 26, 2025
Improper quotation in search paths in the Eaton UPS Companion software installer could lead to arbitrary code execution of an attacker with the access to the file system. This security issue has been fixed in the latest version of EUC which is available on the Eaton download center.
Vulnerability Analysis
CVE-2025-59888 is exploitable with local system access, and requires user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Unquoted Search Path or Element
The product uses a search path that contains an unquoted element, in which the element contains whitespace or other separators. This can cause the product to access resources in a parent path. If a malicious individual has access to the file system, it is possible to elevate privileges by inserting such a file as "C:\Program.exe" to be run by a privileged program making use of WinExec.
Affected Versions
Eaton UPS Companion software:- Before 3.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.