AL26-020 - Vulnerabilities Impacting MikroTik RouterOS - CVE-2026-67276, CVE-2026-67277 and CVE-2026-86060

Number: AL26-020Date: September 10, 2026 Audience This Alert is intended for IT professionals and managers. Purpose An Alert is used to raise awareness of a recently identified cyber threat that may impact cyber information assets, and to provide additional detection and mitigation advice to recipients. The Canadian Centre for Cyber Security ("Cyber Centre") is also available to provide additional assistance regarding the content of this Alert to recipients as requested. Details The Cyber Centre is aware of vulnerabilities impacting MikroTik RouterOS devices, especially if the SSH service is exposed to the Internet Footnote 1. In response to the vendor advisory released on September 3, 2026, the Cyber Centre released AV26-887 on September 8, 2026 Footnote 2. Tracked as CVE-2026-67277Footnote 3, this vulnerability is a Missing Authentication for Critical Function vulnerability (CWE-306) Footnote 4 that may allow a remote attacker to obtain potentially sensitive information. Tracked as CVE-2026-86060Footnote 5, this vulnerability is an Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability (CWE-88)Footnote 6 that may allow a remote attacke...