Risk Letters

Exploited vulnerability

CVE-2026-86060

TLP:CLEAR

MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability

MikroTik RouterOS contains an improper neutralization of argument delimiters in a command vulnerability which allows an attacker to change the trusted RouterOS policy mask, leading to privilege escalation.

Facts

  • Vendor: MikroTik
  • Product: RouterOS
  • CVSS: 9.2
  • EPSS (probability of exploitation within 30 days): 6.4 %
  • On CISA's Known Exploited Vulnerabilities list since: 10 September 2026
  • First known exploitation: 10 September 2026
  • CISA's deadline for US federal agencies: 13 September 2026
  • Weakness: CWE-88
  • First seen by Risk Letters: 10 September 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD