Security fix · CVE-2025-59887
Improper authentication of library files in the Eaton UPS Companion software installer could lead to arbitrary code execution of an attacker with the access to the software package
Published Dec 26, 2025 · catalog updated Dec 26, 2025 · Eaton Eaton UPS Companion Software
Last checked Nov 2, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-59887. EPSS is 0.26%. Act only if a listed version of Eaton Eaton UPS Companion Software is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- High8.6
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.26%
- Remediation
- Version ranges on file
- Affected products
- vendor Eaton Eaton UPS Companion Software 0 <3.0
Improper authentication of library files in the Eaton UPS Companion software installer could lead to arbitrary code execution of an attacker with the access to the software package. This security issue has been fixed in the latest version of EUC which is available on the Eaton download center.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Eaton Eaton UPS Companion Software 0 <3.00 <3.0
How to fix CVE-2025-59887
Upgrade
CVE-2025-59887 lists a fix boundary at 3.0. Compare the installed build with that boundary before you change production.
Version check
Seen in 0 <3.0
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-59887. EPSS is 0.26%. Act only if a listed version of Eaton Eaton UPS Companion Software is installed.
Which versions are affected?
Compare what you have installed with Eaton Eaton UPS Companion Software 0 <3.0 0 <3.0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.26%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Dec 26, 2025 · EUVD
Detected
Improper authentication of library files in the Eaton UPS Companion software installer could lead to arbitrary code execution of an attacker with the access to the software package. This security issue has been fixed in the latest version of EUC which is available on the Eaton download center.
Dec 26, 2025 · EUVD
Updated
Improper authentication of library files in the Eaton UPS Companion software installer could lead to arbitrary code execution of an attacker with the access to the software package. This security issue has been fixed in the latest version of EUC which is available on the Eaton download center.
Sources
- CVE.orgVulnerability recordCVE-2025-59887
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-59887
30-day exploitation probability 0.26%
first.org - EUVDVulnerability recordEUVD-2025-205429
Improper authentication of library files in the Eaton UPS Companion software installer could lead to arbitrary code execution of an attacker with the access to the software package. This security issue has been fixed in the latest version of EUC which is available on the Eaton do
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 2, 2026
- CVE.orgNov 2, 2026
- EUVDNov 1, 2026