CVE-2025-30004
Published: 31 March 2025
Summary
CVE-2025-30004 is a high-severity OS Command Injection (CWE-78) vulnerability in Xorcom Completepbx. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 1.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
Xorcom CompletePBX is affected by an authenticated command injection vulnerability in its administrator Task Scheduler feature. The flaw, present in all versions through 5.2.35, stems from improper handling of user-supplied input that is passed to operating system commands, corresponding to CWE-78. Successful exploitation grants an attacker the ability to run arbitrary commands with root privileges on the underlying system.
An attacker with low-privileged but authenticated access to the Task Scheduler interface can supply crafted input that results in immediate command execution. Because the vulnerability is exploitable over the network with no user interaction required and leads to full confidentiality, integrity, and availability impact, it carries a CVSS 3.1 score of 8.8.
The vendor addressed the issue in CompletePBX release 5.2.36-1. Administrators are advised to upgrade promptly; the accompanying advisory from Xorcom and independent analysis from VulnCheck both point to this version as the corrective release.
EPSS for the CVE rose from lower values after disclosure to a peak of 0.7859 on 2026-02-06 before receding to the current 0.7058, indicating that exploitation interest increased measurably in the months following publication.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-8863
Vulnerability details
Xorcom CompletePBX is vulnerable to command injection in the administrator Task Scheduler functionality, allowing for attackers to execute arbitrary commands as the root user. This issue affects CompletePBX: all versions up to and prior to 5.2.35
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Command injection in admin Task Scheduler allows authenticated low-priv user to run arbitrary commands as root, directly enabling privilege escalation (T1068) and Unix shell command execution (T1059.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents command injection in the Task Scheduler by validating and sanitizing user inputs before processing.
Ensures timely patching of the specific command injection flaw, as addressed in CompletePBX version 5.2.36.1.
Enforces least privilege on the Task Scheduler functionality to restrict escalation to root even if injection succeeds.