SB2026021705 - Multiple vulnerabilities in GFI Archiver

Description

This security bulletin contains information about 4 vulnerabilities.

1) Deserialization of Untrusted Data (CVE-ID: CVE-2026-2037)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the configuration of the MArc.Core.Remoting.exe process. A remote user can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Missing Authorization (CVE-ID: CVE-2026-2039)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to missing authorization within the configuration of the MArc.Store.Remoting.exe process. A remote attacker can bypass authentication on the system.

3) Deserialization of Untrusted Data (CVE-ID: CVE-2026-2036)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the configuration of the MArc.Store.Remoting.exe process. A remote user can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

4) Missing Authorization (CVE-ID: CVE-2026-2038)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to missing authorization within the configuration of the MArc.Core.Remoting.exe process. A remote attacker can bypass authentication on the system.

Remediation

Install update from vendor's website.

References

• https://www.zerodayinitiative.com/advisories/ZDI-26-074/
• https://www.zerodayinitiative.com/advisories/ZDI-26-077/
• https://www.zerodayinitiative.com/advisories/ZDI-26-076/
• https://www.zerodayinitiative.com/advisories/ZDI-26-075/