CVE-2026-67279 MikroTik RouterOS: software flaw
In plain words: A mistake in the software that attackers have found a way to abuse. Depends on the product — see the description and the vendor advisory.
Confirmed exploited by CISA on · US federal patch deadline Sep 28, 2026
What to do
- Install MikroTik's security update for RouterOS. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- Mikrotik RouterOS Improper Enforcement of Behavioral Workflow Vulnerability
- Product
- MikroTik RouterOS
- CISA description
- Mikrotik RouterOS contains an improper enforcement of behavioral workflow vulnerability that could allow an unauthenticated client to open a session channel and send an exec request. This vulnerability can be chained to achieve unauthenticated exploitation of CVE-2026-86060.
- Type of flaw
- Software flaw (CWE-841)
- Confirmed exploited
- Sep 25, 2026
- US federal patch deadline
- Sep 28, 2026
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Answering about CVE-2026-67279 ·
Questions about CVE-2026-67279
Is CVE-2026-67279 being exploited?
Yes. CISA added CVE-2026-67279 to its Known Exploited Vulnerabilities catalog on Sep 25, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-67279?
Install MikroTik's security update for RouterOS. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2026-67279?
Only if you use MikroTik RouterOS. This one is aimed at devices or apps of the kind people own.