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

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HIGH 8.8DOWNGRADE

CVE-2026-2037 is a high-severity flaw (CVSS 8.8) affecting archiver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-02-20
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: gfi

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-20 23:16 UTCPublished CVE record published
2026-06-17 10:30 UTCUpdated Record last modified

gfi archiver DOWNGRADE

Affected: 15.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.10

1. Check installed version

apt-cache policy archiver || rpm -q archiver || archiver --version

2. No fixed release: DOWNGRADE to a release before 15.10 (Debian / Ubuntu)

apt-cache madison archiver sudo apt install archiver=<VERSION_BEFORE_15.10> sudo apt-mark hold archiver

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list archiver sudo dnf downgrade archiver-<VERSION_BEFORE_15.10> sudo dnf versionlock add archiver

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-2037?

archiver: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-2037 being exploited?

CVE-2026-2037 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-2037 affect?

CVE-2026-2037 affects archiver. Severity is high (CVSS 8.8). 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 require

How urgent is CVE-2026-2037?

Priority 49/100. High severity

Related CVEs

CVE-2026-2039 CRITICAL 9.8 DOWNGRADE GFI Archiver MArc.Store Missing Authorization Authentication Bypass Vulnerability
CVE-2026-2038 CRITICAL 9.8 DOWNGRADE GFI Archiver MArc.Core Missing Authorization Authentication Bypass Vulnerability
CVE-2026-2036 HIGH 8.8 DOWNGRADE GFI Archiver MArc.Store Deserialization of Untrusted Data Remote Code Execution Vulnerability
CVE-2024-11949 HIGH 8.8 UPGRADE GFI Archiver Store Service Deserialization of Untrusted Data Remote Code Execution Vulnerability
CVE-2024-11948 CRITICAL 9.8 UPGRADE GFI Archiver Telerik Web UI Remote Code Execution Vulnerability

References

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