Is there a public exploit for CVE-2026-3868?

No public exploit for CVE-2026-3868 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-3868?

CVE-2026-3868 scores CVSS 8.7 (v4.0), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.37%.

What does CVE-2026-3868 affect?

CVE-2026-3868 affects Moxa EDR-G9010 Series, EDR-8010 Series.

8.7 High

An improper handling of the length parameter inconsistency vulnerability has been identified in Moxa’s Secure Router.

CVE-2026-3868

An improper handling of the length parameter inconsistency vulnerability has been identified in Moxa’s Secure Router. Because of improper validation of length parameters in the HTTPS management interface, an unauthenticated remote attacker could send specially crafted requests that trigger a buffer overflow condition, causing the web service to become unresponsive. Successful exploitation may result in a denial-of-service condition requiring a device reboot to restore normal operation. While successful exploitation can severely impact the availability of the affected device, no impact to the confidentiality or integrity of the affected product has been identified. Additionally, no confidentiality, integrity, or availability impact to the subsequent system has been identified.

Assessment

CVSS: 8.7 (v4.0)
Severity: High
EPSS: 0.37% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 27 April 2026
Last updated: 2 November 2026
Affected: Moxa · EDR-8010 Series · EDR-G9010 Series
Assigner: Moxa

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

https://www.moxa.com/en/support/product-support/security-advisory/mpsa-261521-cve-2026-3867-cve-2026-3868-improper-ownership-management-and-improper-handling-of-length-parameter-incons

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