CVE-2025-59886
Published: 23 December 2025
Summary
CVE-2025-59886 is a high-severity Improper Input Validation (CWE-20) vulnerability in Eaton Xcomfort Ethernet Communication Interface. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 19.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SA-22 (Unsupported System Components) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2025-59886 is an improper input validation vulnerability (CWE-20) affecting one of the endpoints in the web interface of Eaton xComfort ECI, a networked device. Rated at CVSS 3.1 score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), it stems from inadequate validation of inputs, enabling unauthorized command execution. The vulnerability was published on 2025-12-23.
An attacker with network access to the affected Eaton xComfort ECI device and low privileges (PR:L) can exploit this vulnerability without user interaction. Successful exploitation allows the execution of privileged user commands, potentially resulting in high-impact compromise of confidentiality, integrity, and availability.
Eaton's security bulletin (ETN-VA-2025-1022) advises that the xComfort ECI product has been discontinued to align with evolving cybersecurity standards. No patches, security updates, non-security updates, paid support, or technical content updates will be provided post-retirement.
Security practitioners should prioritize isolating or retiring affected xComfort ECI devices from networks, as no mitigations beyond discontinuation are available.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-204794
Vulnerability details
Improper input validation at one of the endpoints of Eaton xComfort ECI's web interface, could lead into an attacker with network access to the device executing privileged user commands. As cybersecurity standards continue to evolve and to meet our requirements…
more
today, Eaton has decided to discontinue the product. Upon retirement or end of support, there will be no new security updates, non-security updates, or paid assisted support options, or online technical content updates.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Vulnerability in public-facing web interface enables remote exploitation for unauthorized privileged command execution (T1190: Exploit Public-Facing Application; T1068: Exploitation for Privilege Escalation).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires implementation of input validation at web interface endpoints to prevent exploitation of the improper input validation vulnerability (CWE-20).
Prohibits the use of discontinued and unsupported components like Eaton xComfort ECI, preventing exposure to unpatchable vulnerabilities.
Mandates identification and remediation of flaws like this command execution vulnerability through isolation or retirement of affected EOL devices.