exploit · Thu 10 Sep 2026 · 00:00 UTC
Actively exploitedCISA adds CVE-2026-67277 (MikroTik RouterOS) to the Known Exploited Vulnerabilities catalog
Filed UTCSource CRT ↗
MikroTik RouterOS contains a missing authenticaion for critical function vulnerability which allows kernel memory disclosure and denial of service in the btest service. 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. …
Signals
as the pipeline stamped them- KEV
- Active exploitation (KEV)
- Shodan
- Shodan: ~190,200 MikroTik exposed worldwide (05 Oct)
- What to do
- 1.On CISA KEV — actively exploited. Patch immediately.
- 2.~190,200 MikroTik are exposed worldwide — check your own version.
CISA KEV means this flaw has been seen exploited in real attacks — not predicted, observed. Treat it as urgent regardless of its score.
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-67277 | KEV | 2% | NVD ↗ |
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