CVE-2026-27849 — CRITICAL (9.8)

Vulnerability Description

Due to missing neutralization of special elements, OS commands can be injected via the update functionality of a TLS-SRP connection, which is normally used for configuring devices inside the mesh network. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-78

References

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-011.t

FAQ

What is CVE-2026-27849?

CVE-2026-27849 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Due to missing neutralization of special elements, OS commands can be injected via the update functionality of a TLS-SRP connection, which is normally used for configuring devices inside the mesh netw...

How severe is CVE-2026-27849?

CVE-2026-27849 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-27849?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.