ZDI-26-077: GFI Archiver MArc.Store 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.Store.Remoting.exe process, which listens on port 8018. 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-2026-2039.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-26-077?
ZDI-26-077 has a severity rating of high at 7.3.
How do I fix ZDI-26-077?
To fix ZDI-26-077, update to the latest version of GFI Archiver that includes fixes for this vulnerability.
What does ZDI-26-077 allow an attacker to do?
ZDI-26-077 allows remote attackers to bypass authentication and access sensitive data without authorization.
Which software is affected by ZDI-26-077?
ZDI-26-077 affects GFI Software's GFI Archiver.
What component is misconfigured in ZDI-26-077?
The MArc.Store.Remoting.exe process, which listens on port 8018, is misconfigured in ZDI-26-077.