CVE-2026-27849

CRITICAL
2026-02-25 a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
9.8
CVSS 3.1
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CVSS Vector

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

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 25, 2026 - 17:25 nvd
CRITICAL 9.8

Tags

Command Injection

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.

Analysis

OS command injection via TLS-SRP update functionality. Third TLS-SRP injection CVE — command injection through the credential update mechanism.

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Remediation

Within 24 hours: Inventory all MR9600 (v1.0.4.205530) and MX4200 (v1.0.13.210200) devices and isolate affected units from production networks if operationally feasible. Within 7 days: Implement network segmentation to restrict access to TLS-SRP update ports and disable the update functionality if not critical to operations; enable enhanced logging and monitoring for suspicious activity on these devices. …

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Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +49
POC: 0

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CVE-2026-27849 vulnerability details – vuln.today
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