Live › vulnerability › CVE-2026-67279
Go to dashboardRouterOS SSH server mishandles a rekey during user authentication and jumps to channel handling without authentication, so an unauthenticated client can open a session and send exec requests. Chained with CVE-2026-86060 (username '-2' lets the attacker set the login policy mask) this gives full admin access (MikroTrick). Exploited since 2 Sep 2026 from 82.192.72.4, which creates an 'ops' full-privilege account. CERT.pl did not publish a PoC; it gave one to the vendor.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| MikroTik RouterOS | vendor | >= 6.0.0, < 6.49.21; >= 7.0.0, < 7.23.4; >= 7.24, < 7.24.2 | 6.49.21, 7.23.4, 7.24.2 |
| mikrotik routeros | vendor | >= 6.0, < 6.49.21 | 6.49.21 |
| mikrotik routeros | vendor | >= 7.0, < 7.23.4 | 7.23.4 |
| mikrotik routeros | vendor | >= 7.24, < 7.24.2 | 7.24.2 |
| MikroTik RouterOS | vendor | – | – |
6.49.21, 7.0–7.23.3, 7.24.0–7.24.1); /ip service print and /ip firewall filter print show whether SSH (22) is reachable from untrusted networkslogin failure for user -2 from 82.192.72.4 via ssh and user ops added by ssh, look for an unknown full-group ops user (/user print), unknown scripts, a RIF diagnostic file fetched to 82.192.72.4, and a Flagged critical log entry on patched devices6.49.21, 7.23.4 or 7.24.2 or later7.24.3 or 7.23.6Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
This page as .md · .json · in your agent: get_signal("CVE-2026-67279")
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