CVE-2025-25270
Published: 08 July 2025
Summary
CVE-2025-25270 is a critical-severity Improper Control of Dynamically-Managed Code Resources (CWE-913) vulnerability in Phoenixcontact Charx Sec-3000 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 21.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 CM-3 (Configuration Change Control) and SC-7 (Boundary Protection).
Deeper analysis
The vulnerability CVE-2025-25270 is an unauthenticated remote code execution flaw tied to CWE-913 that permits alteration of device configuration settings. It affects a device supporting such configuration changes and carries a CVSS 3.1 score of 9.8 reflecting network-accessible attack vectors with no required credentials or user interaction.
An unauthenticated remote attacker can exploit the issue over the network to modify configuration data, resulting in arbitrary code execution as root when specific device configurations are present. This grants the attacker full system control including confidentiality, integrity, and availability impacts.
The referenced advisory VDE-2025-019 at certvde.com addresses mitigation steps for the vulnerability. Exploitation probability remains low and unchanged with an EPSS score of 0.0113 at both current and peak values.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-20402
Vulnerability details
An unauthenticated remote attacker can alter the device configuration in a way to get remote code execution as root with specific configurations.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct unauthenticated network RCE on a public-facing device maps cleanly to initial access via public application exploitation.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly remediates the critical flaw allowing unauthenticated remote attackers to alter device configurations for root RCE.
Monitors and controls network communications at boundaries to block unauthenticated remote access to the vulnerable configuration interface.
Requires authorization, documentation, testing, and verification of configuration changes to prevent unauthorized alterations leading to RCE.