CVE-2026-3873
7.2syslink software AG · Avantra
A hard-coded credentials vulnerability in Avantra allows unauthenticated attackers to access system functionality that is not properly constrained by access control lists.
Executive summary
A high-severity hard-coded credential vulnerability in Avantra versions prior to 25.3.0 poses a significant risk of unauthorized access to sensitive system functions.
Vulnerability
This vulnerability involves the use of hard-coded credentials within the application, which permits unauthenticated remote users to bypass security controls and access restricted functionality.
Business impact
The presence of hard-coded credentials introduces a direct path for unauthorized actors to interact with restricted system components, potentially leading to unauthorized data exposure or manipulation. Given the CVSS score of 7.2, this vulnerability represents a significant risk to operational integrity, as the lack of authentication requirements makes the system highly susceptible to exploitation by external threats.
Remediation
Immediate Action: Update the Avantra installation to version 25.3.0 or later as specified in the vendor security notice.
Proactive Monitoring: Review system access logs for suspicious login patterns or access attempts originating from unrecognized or unauthorized service accounts.
Compensating Controls: Implement strict network segmentation to restrict access to the Avantra management interface to trusted administrative subnets only, effectively reducing the attack surface.
Exploitation status
Public Exploit Available: Unknown
Analyst recommendation
The risk posed by hard-coded credentials cannot be overstated, as they provide a permanent backdoor for any actor aware of the secret. Organizations must prioritize the upgrade to version 25.3.0 immediately to remove these credentials and restore proper access control enforcement across the Avantra environment.
Sources
Originally found and disclosed by Vicxer Inc., per the CVE Program record.