Vulnerability · Published Feb 20, 2026 · Assigned by zdi

CVE-2026-2037GFI Archiver MArc.Core Deserialization of Untrusted Data Remote Code Execution Vulnerability

High 8.8

In plain English

A high-severity unsafe deserialization in Archiver from GFI. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities).

Severity (CVSS 3.0)8.8High

Exploit odds (30 days)1.4%top 28.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
GFI	Archiver	15.10

Weakness: CWE-502 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

ZDI-26-074 x_research-advisory