CVE-2026-2039 — CRITICAL (9.8)

Vulnerability Description

GFI Archiver MArc.Store Missing Authorization Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of GFI Archiver. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the MArc.Store.Remoting.exe process, which listens on port 8018. The issue results from the lack of authorization prior to allowing access to functionality. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of SYSTEM. Was ZDI-CAN-28597.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gfi	Archiver	15.10

Related Weaknesses (CWE)

CWE-862

References

https://www.zerodayinitiative.com/advisories/ZDI-26-077/Third Party Advisory

FAQ

What is CVE-2026-2039?

CVE-2026-2039 is a vulnerability with a CVSS score of 9.8 (CRITICAL). GFI Archiver MArc.Store Missing Authorization Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of GFI Archiver. Authen...

How severe is CVE-2026-2039?

CVE-2026-2039 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-2039?

Check the references section above for vendor advisories and patch information. Affected products include: Gfi Archiver.