ZDI-26-076: GFI Archiver MArc.Store Deserialization of Untrusted Data Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of GFI Archiver. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the configuration of the MArc.Store.Remoting.exe process. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of GFI Archiver. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-2036.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-26-076?
ZDI-26-076 is classified as a critical severity vulnerability due to its potential for remote code execution.
How do I fix ZDI-26-076?
To fix ZDI-26-076, ensure you update GFI Archiver to the latest version that addresses this vulnerability.
What is the impact of ZDI-26-076?
The impact of ZDI-26-076 allows remote attackers to execute arbitrary code on affected installations, leading to potential system compromise.
Who is affected by ZDI-26-076?
Organizations using GFI Archiver are affected by ZDI-26-076, particularly if they have not applied the necessary updates.
Is authentication required to exploit ZDI-26-076?
Yes, although authentication is required, the vulnerability can still allow attackers to execute arbitrary code once they are authenticated.