PT-2026-21962 · Mr9600+1 · Mr9600+1

Christian Zäske · Published 2026-02-25 · Updated 2026-02-26 · CVE-2026-27849

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions MR9600 versions 1.0.4.205530 MX4200 versions 1.0.13.210200

Description The issue stems from a lack of proper handling of special characters, allowing for the injection of OS commands through the update functionality associated with a TLS-SRP connection. This connection is typically used for device configuration within a mesh network. The vulnerability allows an attacker to inject and execute arbitrary OS commands. The vulnerable functionality is related to the update process and the TLS-SRP connection.

Recommendations MR9600 version 1.0.4.205530: At the moment, there is no information about a newer version that contains a fix for this vulnerability. MX4200 version 1.0.13.210200: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2026-27849

Affected Products

Mr9600

Mx4200

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-27849 · Security Note
• https://twitter.com/CVEnew/status/2027099323864133873 · Twitter Post
• https://twitter.com/infoflowcloud/status/2027100519735386429 · Twitter Post
• https://syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-011.txt · Note
• https://twitter.com/TheHackerWire/status/2027086905695986005 · Twitter Post