Cyber Resilience

CVE-2025-59888

Eaton Ups Companion ≤ 3.0

Published
26 December 2025
Modified
18 February 2026
Patch / advisory
View advisory
CVSS Score v3.1 6.7
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:H
EPSS Score 0.0020 10th percentile
Risk Priority 44 floored blend · peak EPSS

Summary

CVE-2025-59888 is a medium-severity Unquoted Search Path or Element (CWE-428) vulnerability in Eaton Ups Companion. Its CVSS base score is 6.7 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Path Interception (T1034); ranked at the 10th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-15 (Development Process, Standards, and Tools) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

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…

more

which is available on the Eaton download center.

CWE(s)
CWE-428

Related Threats

MITRE ATT&CK Enterprise Techniques

T1034 Path Interception Persistence
**This technique has been deprecated.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-67450Same product: Eaton Ups Companion
CVE-2025-59887Same product: Eaton Ups Companion
CVE-2025-66269Shared CWE-428
CVE-2023-26911Shared CWE-428
CVE-2020-37061Shared CWE-428
CVE-2025-57227Shared CWE-428
CVE-2023-36658Shared CWE-428
CVE-2016-20086Shared CWE-428
CVE-2016-20091Shared CWE-428
CVE-2023-2331Shared CWE-428

Affected Assets

eaton
ups companion
≤ 3.0

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation can discover unquoted search paths through static analysis or dynamic test cases.

SA-15 Development Process, Standards, and Tools partial match

Documented development standards and tools can mandate proper quoting and escaping of path elements.

SA-8 Security and Privacy Engineering Principles partial match

Engineering principles can require safe construction and quoting of search paths and command elements.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent path-handling flaws such as unquoted elements during development.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect unquoted search-path issues before deployment.

A.8.19 Installation of software on operational systems partial match
degrades

Enforcing controlled software installation can prevent unquoted search-path elements in executables and scripts.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle practices include input validation and path handling that reduce unquoted search-path weaknesses.

A.8.27 Secure system architecture and engineering principles partial match
degrades

Secure system architecture and engineering principles require safe path construction and quoting conventions.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly mandate quoting search paths and avoiding unsafe path construction.

A.8.32 Change management partial match
degrades

Change-management processes can enforce review of path-handling changes that might introduce unquoted elements.

References