Exploited vulnerability

CVE-2026-67277

TLP:CLEAR

MikroTik RouterOS Missing Authentication for Critical Function Vulnerability

MikroTik RouterOS contains a missing authentication for critical function vulnerability which allows kernel memory disclosure and denial of service in the btest service.

Facts

Vendor: MikroTik
Product: RouterOS
CVSS: 8.8
EPSS (probability of exploitation within 30 days): 1.6 %
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-306
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