جزئیات آسیب‌پذیری

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)

• https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve third-party-advisory
• https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/ technical-description
• https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/ exploit
• https://mikrotik.com/supportsec/september-2026-vulnerability/ vendor-advisory
• https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802 release-notes
• https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801 release-notes
• https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800 release-notes
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86060 government-resource