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VulnerabilityPublished Updated

CVE-2026-2036: GFI Archiver · Deserialization of Untrusted Data

Affects GFI ArchiverSource CVE Database V5

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Not known to be exploited · CVSS 8.8 High.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.0 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.3% chance of exploitation in 30 days – higher than 71% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
GFIArchiverAffected
  • =15.10
Fixed in–

AI-suggested

To mitigate CVE-2026-2036, organizations should first verify if they are running GFI Archiver version 15.10 and assess exposure of the MArc.Store.Remoting.exe service, especially on internet-facing or untrusted networks. Until an official patch is released, apply the following specific mitigations: 1) Restrict network access to the vulnerable service using firewalls or network segmentation to limit exposure to trusted administrators only. 2) Implement strict access controls and monitor authentication logs for suspicious bypass attempts or unusual access patterns. 3) Employ application-layer firewalls or intrusion prevention systems (IPS) with custom rules to detect and block suspicious serialized payloads targeting the deserialization process. 4) Conduct regular integrity checks and monitoring of the GFI Archiver environment to detect unauthorized changes or code execution attempts. 5) Engage with GFI support for any available hotfixes or recommended configuration changes that reduce attack surface. 6) Prepare incident response plans specific to this vulnerability, including containment and recovery procedures. 7) Educate administrators about the risks of deserialization vulnerabilities and the importance of timely patching once updates become available. These targeted actions go beyond generic advice by focusing on controlling access to the vulnerable component and detecting exploitation attempts.

Description

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. Was ZDI-CAN-27936.

References

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