CVE-2026-2037: gfi archiver Deserialization of Untrusted Data

Vulnerability summary

CVE-2026-2037 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in gfi archiver. EPSS estimates a 1.37% chance of exploitation in the next 30 days, higher than 71.5% of scored vulnerabilities.

Timeline

1. 20-02-2026
   PublishedVulnerability first disclosed.
2. 24-02-2026
   Last modifiedVulnerability information updated.

Description

GFI Archiver MArc.Core 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.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. Was ZDI-CAN-27935.

• CWE-502Deserialization of Untrusted DataThe product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.