VULNERABILITY INTELLIGENCE

CVE-2026-86060

CVSS score9.8 CRITICAL
EPSS probability6.39%
CISA KEVKnown exploited vulnerability
Published2026-09-05
Last modified2026-09-11
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability

Vendor / product: MikroTik / RouterOS

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)

Weakness classification

  • cvd@cert.pl: CWE-88

Primary references