Advisory Details

February 12th, 2026

GFI Archiver MArc.Core Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-26-074
ZDI-CAN-27935

CVE ID CVE-2026-2037
CVSS SCORE 8.8, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS GFI
AFFECTED PRODUCTS Archiver
VULNERABILITY DETAILS

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.Core.Remoting.exe process, which listens on port 8017. 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.

ADDITIONAL DETAILS

Fixed in Version 15.11
https://gfi.ai/products-and-solutions/network-security-solutions/archiver/resources/documentation/product-releases


DISCLOSURE TIMELINE
  • 2025-11-19 - Vulnerability reported to vendor
  • 2026-02-12 - Coordinated public release of advisory
  • 2026-02-12 - Advisory Updated
CREDIT Anonymous
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