CVE-2026-86060

MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability

Routeros

RouterOS contains an argument-handling flaw in the SSH login path involving usernames that begin with a prohibited character, allowing for the trusted RouterOS policy mask to be changed, leading to privilege escalation. Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)

5. Sep 2026

Ausgewertete Quellen

• Hersteller
  https://mikrotik.com/supportsec/september-2026-vulnerability/
• Hinweis
  https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve
• Hinweis
  https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/
• Hinweis
  https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86060
• CISA
  MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability
• NVD
  CVE-2026-86060