VULNERABILITY INTELLIGENCE

CVE-2026-67279

CVSS score6.9 MEDIUM
EPSS probability1.03%
CISA KEVKnown exploited vulnerability
Published2026-09-05
Last modified2026-09-26
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Known Exploited Vulnerability

Mikrotik RouterOS Improper Enforcement of Behavioral Workflow Vulnerability

Vendor / product: MikroTik / RouterOS

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)

Weakness classification

  • CWE-841: Improper Enforcement of Behavioral Workflow

Primary references