PT-2026-35346 · Moxa · Secure Router

Published 2026-04-27 · Updated 2026-04-28 · CVE-2026-3868

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Moxa Secure Router (affected versions not specified)

Description Improper validation of length parameters in the HTTPS management interface allows an unauthenticated remote attacker to send specially crafted requests. This triggers a buffer overflow, a condition where a program writes more data to a block of memory than it can hold, causing the web service to become unresponsive. Successful exploitation results in a denial-of-service condition that requires a device reboot to restore normal operation. This issue impacts device availability, but does not affect confidentiality or integrity.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-130

Related Identifiers

CVE-2026-3868

Affected Products

Secure Router

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-3868 · Security Note
• https://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 · Vendor Advisory
• https://t.me/cveNotify/161014 · Telegram Post
• https://t.me/cveNotify/161015 · Telegram Post
• https://twitter.com/CVEnew/status/2048910103450103823 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2048635336150905167 · Twitter Post
• https://t.me/CVEtracker/51890 · Telegram Post
• https://twitter.com/CCBalert/status/2049133079667544293 · Twitter Post