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CVE-2026-67279 is an improper enforcement of behavioral workflow flaw in MikroTik RouterOS SSH. Following a client-requested SSH rekey, affected servers can transition into the connection protocol even though user authentication has not been attempted or completed. An unauthenticated client can consequently open an SSH session channel and submit an exec request, which the server dispatches. The reachable command path permits creation, overwriting, and reconstruction of files in the RouterOS-managed file namespace, including configuration and diagnostic support files.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated SSH rekeying flaw in MikroTik RouterOS that allows a pre-authentication client to access functionality intended only for authenticated sessions, including opening a session channel and requesting command execution. It is the initial-access stage of the MikroTrick takeover chain.
An unauthenticated SSH rekeying flaw in MikroTik RouterOS that allows a pre-authentication client to access protected functionality, open a session channel, and request command execution. It is the first stage of the MikroTrick takeover chain.
An unauthenticated SSH rekeying state-machine bypass in MikroTik RouterOS. It permits an unauthenticated connection to reach post-login session functionality and serves as the first stage of the MikroTrick administrative-takeover chain.
A MikroTik RouterOS vulnerability covered by the referenced Nessus plugin; no vulnerability type, severity, exploitation status, or technical impact is provided.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.