CVE-2026-67279 Mikrotik — Exploit & Vulnerability Details MEDIUM

Parameter	Value
CVSS	6.9 (MEDIUM)
Affected Versions	6.0 — 7.24.2
Fixed In	6.49.21
Type	CWE-841
Vendor	Mikrotik
Public PoC	Yes

RouterOS SSH enters the connection protocol after a client-requested rekey even though user authentication was never attempted, allowing an unauthenticated client to open a session channel and send an exec request. On affected builds the server dispatches the command, enabling unauthenticated creation, overwrite, and reconstruction of files in the RouterOS managed file namespace, including support files containing configuration and diagnostic data.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)

Attack Parameters

Attack Vector

Network

Can be exploited remotely

Attack Complexity

Low

Easy to exploit

Attack Requirements

None

No additional conditions

Privileges Required

None

No privileges needed

User Interaction

None

No user interaction needed

Impact Assessment

Confidentiality

Low

Partial data leak

Integrity

Low

Partial data modification

Availability

None

No disruption

CVSS Vector v4.0

Weakness Type (CWE)

CWE-841

Vulnerable Products 3

Configuration	From (including)	Up to (excluding)
Mikrotik Routeros cpe:2.3:o:mikrotik:routeros::::::::	`6.0`	`6.49.21`
Mikrotik Routeros cpe:2.3:o:mikrotik:routeros::::::::	`7.0`	`7.23.4`
Mikrotik Routeros cpe:2.3:o:mikrotik:routeros::::::::	`7.24`	`7.24.2`