ZDI-CAN-27934: ZDI-26-075: GFI Archiver MArc.Core Missing Authorization Authentication Bypass Vulnerability
This vulnerability allows remote attackers to bypass authentication on affected installations of GFI Archiver. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the MArc.Core.Remoting.exe process, which listens on port 8017. The issue results from the lack of authorization prior to allowing access to functionality. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of SYSTEM.
Other sources
This vulnerability allows remote attackers to bypass authentication on affected installations of GFI Archiver. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.3. The following CVEs are assigned: CVE-2026-2038.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-27934?
The severity of ZDI-CAN-27934 is considered high due to the ability for remote attackers to bypass authentication.
How do I fix ZDI-CAN-27934?
To fix ZDI-CAN-27934, ensure that you apply the latest security updates provided by GFI for GFI Archiver.
What type of systems are affected by ZDI-CAN-27934?
ZDI-CAN-27934 affects installations of GFI Archiver that have not been patched against this vulnerability.
Can ZDI-CAN-27934 be exploited without authentication?
Yes, ZDI-CAN-27934 can be exploited remotely without any authentication requirements.
What is the impact of exploiting ZDI-CAN-27934?
Exploiting ZDI-CAN-27934 could allow attackers to gain unauthorized access to sensitive information within GFI Archiver.