CVE WatchSep 5, 2026

CVE-2026-67279

RouterOS SSH enters the connection protocol after a client-requested rekey even though user authentication was never attempted, allowing an

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 5, 2026 · Last modified: Sep 5, 2026 · CWE-841

EPSS · 30d

Not enough EPSS history yet.

Technical description

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)

Official references

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