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Critical · 9.2 Known exploited Public exploit CVE-2026-86060 EUVD-2026-72029GHSA-6425-cjxv-52gp

SSH session privilege manipulation via a crafted username in Mikrotik RouterOS

Published Sep 5, 2026 · Updated Sep 11, 2026 · Assigned by CERT-PL

Vendor: MikroTik Product: RouterOS Category: Network devices

Description

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)

Affected products

VendorProductAffectedFixed
Mikrotik RouterOS 7.24 – < 7.24.2, 7.0.0 – < 7.23.4, 6.0.0 – < 6.49.21 7.24.2

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

GitHub 3 repositories

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References