{"uuid": "1d9ea784-c941-41ec-aa5f-c1cb172bcb68", "vulnerability": {"vulnId": "CVE-2026-67277", "altId": []}, "gcve": {"origin_uuid": "cce329bf-df49-4c6e-a027-80be2e6483bd", "gna": 1, "object_uuid": "1d9ea784-c941-41ec-aa5f-c1cb172bcb68"}, "status": {"exploited": true, "status_reason": "confirmed", "status_updated_at": "2026-09-05T00:00:00+00:00"}, "timestamps": {"asserted_at": "2026-09-05T00:00:00+00:00", "recorded_at": "2026-09-05T22:00:01+00:00", "first_seen_at": "2026-09-05T00:00:00+00:00"}, "scope": {"notes": "MikroTrick | Affected: MikroTik / RouterOS | Description: RouterOS accepts a 'related' btest connection before the corresponding primary session has completed authentication. An unauthenticated client can use this state to start an IPv4 UDP test. With 'random-data=false', the sender transmits an uninitialized tail from a kernel packet buffer. A separate unchecked, inverted packet-size interval causes unsigned integer underflow, anomalously large fragmented output, and can restart the RouterOS kernel. This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable) | Patched since: 2026/09/03 | Exploitation type: unknown | CWEs: CWE-306 | Origin source: CERT.PL | Notes: https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/"}, "evidence": [{"type": "csirt_report", "source": "enisa-cnw-kev", "signal": "successful_exploitation", "confidence": 0.75, "details": {"cwes": ["CWE-306"], "euvd": "EUVD-2026-72025", "notes": "https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/", "catalog": "ENISA / EU CSIRTs Network (CNW) KEV JSON", "product": "RouterOS", "dateReported": "2026/09/05", "originSource": "CERT.PL", "patchedSince": "2026/09/03", "vendorProject": "MikroTik", "exploitationType": ["unknown"], "vulnerabilityName": "MikroTrick", "threatActorsExploiting": []}}], "references": [{"id": "CVE-2026-67277", "url": "https://www.cve.org/CVERecord?id=CVE-2026-67277"}, {"id": "EUVD-2026-72025", "url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-72025"}, {"id": "source", "url": "https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/"}]}