{"schema_version":"1","data":[{"id":53,"advisory_id":"a90432d3-19e9-488e-a2fb-2932f1c8a904","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-67277","source_published_at":"2026-09-10T00:00:00+00:00","published_at":"2026-10-24T20:39:54.51378+00:00","extraction_method":"structured","technologies":["core-kev","routeros"],"cve_ids":["CVE-2026-67277"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"MikroTik RouterOS Missing Authentication for Critical Function Vulnerability","summary":"MikroTik RouterOS contains a missing authentication for critical function vulnerability which allows kernel memory disclosure and denial of service in the btest service. CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","evidence":"kev:CVE-2026-67277","products":[{"name":{"value":"RouterOS","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2026-67277","aliases":["CVE-2026-67277"],"affected":[],"modified":"2026-09-10T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-306"],"cveID":"CVE-2026-67277","notes":"https://mikrotik.com/supportsec/september-2026-vulnerability/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-67277","dueDate":"2026-09-13","product":"RouterOS","dateAdded":"2026-09-10","vendorProject":"MikroTik","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","known_exploited":true,"shortDescription":"MikroTik RouterOS contains a missing authentication for critical function vulnerability which allows kernel memory disclosure and denial of service in the btest service.","vulnerabilityName":"MikroTik RouterOS Missing Authentication for Critical Function Vulnerability","knownRansomwareCampaignUse":"Unknown"}},"related_cves":[{"value":"CVE-2026-67277","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null},"priority":{"reasons":["known_exploited"],"severity":"unknown","linked_cves":[],"fix_available":false,"known_exploited":true,"publisher_severity":"unknown"},"context_update":false}],"next_after":53,"next_before":53}