CVE-2026-67279
Improper Enforcement of Behavioral Workflow in MikroTik RouterOS. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 25 September 2026.
- Product
- MikroTik RouterOS
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s 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.
More from MikroTik this year.
- CVE-2026-86060 Improper Neutralization of Argument Delimiters in a Command, added
- CVE-2026-67277 Missing Authentication for Critical Function, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.