{"history":[{"alert":0,"cve":"CVE-2026-67277","id":23520,"kind":"epss","observed_at":1794500401,"payload":"{\"date\": \"2026-11-12\", \"epss\": 0.0156, \"percentile\": 0.75592}"},{"alert":0,"cve":"CVE-2026-67277","id":20842,"kind":"epss","observed_at":1794327601,"payload":"{\"date\": \"2026-11-10\", \"epss\": 0.0156, \"percentile\": 0.75445}"},{"alert":0,"cve":"CVE-2026-67277","id":18849,"kind":"epss","observed_at":1794241201,"payload":"{\"date\": \"2026-11-09\", \"epss\": 0.0156, \"percentile\": 0.75415}"},{"alert":0,"cve":"CVE-2026-67277","id":16906,"kind":"epss","observed_at":1794154800,"payload":"{\"date\": \"2026-11-08\", \"epss\": 0.0156, \"percentile\": 0.75404}"},{"alert":0,"cve":"CVE-2026-67277","id":14884,"kind":"epss","observed_at":1794068402,"payload":"{\"date\": \"2026-11-07\", \"epss\": 0.0156, \"percentile\": 0.75387}"},{"alert":0,"cve":"CVE-2026-67277","id":12532,"kind":"epss","observed_at":1793982001,"payload":"{\"date\": \"2026-11-06\", \"epss\": 0.0156, \"percentile\": 0.75347}"},{"alert":0,"cve":"CVE-2026-67277","id":10519,"kind":"epss","observed_at":1793938800,"payload":"{\"date\": \"2026-11-05\", \"epss\": 0.0156, \"percentile\": 0.75325}"},{"alert":0,"cve":"CVE-2026-67277","id":8071,"kind":"epss","observed_at":1793809200,"payload":"{\"date\": \"2026-11-04\", \"epss\": 0.0156, \"percentile\": 0.75307}"},{"alert":0,"cve":"CVE-2026-67277","id":5856,"kind":"epss","observed_at":1793722800,"payload":"{\"date\": \"2026-11-03\", \"epss\": 0.0156, \"percentile\": 0.75264}"},{"alert":1,"cve":"CVE-2026-67277","id":3741,"kind":"cna","observed_at":1793679601,"payload":"{\"containers\": {\"adp\": [{\"metrics\": [{\"other\": {\"content\": {\"id\": \"CVE-2026-67277\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"role\": \"CISA Coordinator\", \"timestamp\": \"2026-09-08T00:00:00+00:00\", \"version\": \"2.0.3\"}, \"type\": \"ssvc\"}}, {\"other\": {\"content\": {\"dateAdded\": \"2026-09-10\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-67277\"}, \"type\": \"kev\"}}], \"providerMetadata\": {\"dateUpdated\": \"2026-09-11T03:55:58.675Z\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\"}, \"references\": [{\"tags\": [\"government-resource\"], \"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-67277\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-09-10T00:00:00.000Z\", \"value\": \"CVE-2026-67277 added to CISA KEV\"}], \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"affected\": [{\"defaultStatus\": \"unaffected\", \"product\": \"RouterOS\", \"vendor\": \"Mikrotik\", \"versions\": [{\"lessThan\": \"7.24.2\", \"status\": \"affected\", \"version\": \"7.24\", \"versionType\": \"custom\"}, {\"lessThan\": \"7.23.4\", \"status\": \"affected\", \"version\": \"7.0.0\", \"versionType\": \"custom\"}, {\"lessThan\": \"6.49.21\", \"status\": \"affected\", \"version\": \"6.0.0\", \"versionType\": \"custom\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:mikrotik:routeros:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"7.25.1\", \"versionStartIncluding\": \"0.0.0\", \"vulnerable\": true}], \"negate\": false, \"operator\": \"OR\"}], \"operator\": \"OR\"}], \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"S\\u0142awomir Rozbicki (CERT.PL)\"}], \"descriptions\": [{\"lang\": \"en\", \"supportingMedia\": [{\"base64\": false, \"type\": \"text/html\", \"value\": \"<div><div>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.</div></div><div>This issue was fixed in versions:&nbsp;6.49.21 (Long-term),&nbsp;7.23.4 (Long-term)&nbsp;and&nbsp;7.24.2 (Stable)</div>\"}], \"value\": \"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.\\n\\n\\n\\nThis issue was fixed in versions:\\u00a06.49.21 (Long-term),\\u00a07.23.4 (Long-term)\\u00a0and\\u00a07.24.2 (Stable)\"}], \"metrics\": [{\"cvssV4_0\": {\"Automatable\": \"NOT_DEFINED\", \"Recovery\": \"NOT_DEFINED\", \"Safety\": \"NOT_DEFINED\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"attackVector\": \"NETWORK\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"exploitMaturity\": \"NOT_DEFINED\", \"privilegesRequired\": \"NONE\", \"providerUrgency\": \"NOT_DEFINED\", \"subAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N\", \"version\": \"4.0\", \"vulnAvailabilityImpact\": \"HIGH\", \"vulnConfidentialityImpact\": \"LOW\", \"vulnIntegrityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"format\": \"CVSS\", \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-306\", \"description\": \"CWE-306 Missing authentication for critical function\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"dateUpdated\": \"2026-09-05T20:39:44.166Z\", \"orgId\": \"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6\", \"shortName\": \"CERT-PL\"}, \"references\": [{\"tags\": [\"third-party-advisory\"], \"url\": \"https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve\"}, {\"tags\": [\"technical-description\"], \"url\": \"https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/\"}, {\"tags\": [\"exploit\"], \"url\": \"https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/\"}, {\"tags\": [\"vendor-advisory\"], \"url\": \"https://mikrotik.com/supportsec/september-2026-vulnerability/\"}, {\"tags\": [\"release-notes\"], \"url\": \"https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802\"}, {\"tags\": [\"release-notes\"], \"url\": \"https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801\"}, {\"tags\": [\"release-notes\"], \"url\": \"https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800\"}], \"source\": {\"discovery\": \"INTERNAL\"}, \"title\": \"Kernel memory disclosure and denial of service in MikroTik RouterOS btest service\", \"x_generator\": {\"engine\": \"Vulnogram 1.0.3\"}}}, \"cveMetadata\": {\"assignerOrgId\": \"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6\", \"assignerShortName\": \"CERT-PL\", \"cveId\": \"CVE-2026-67277\", \"datePublished\": \"2026-09-05T20:00:56.614Z\", \"dateReserved\": \"2026-07-29T11:59:30.538Z\", \"dateUpdated\": \"2026-09-11T03:55:58.675Z\", \"state\": \"PUBLISHED\"}, \"dataType\": \"CVE_RECORD\", \"dataVersion\": \"5.2\"}"},{"alert":0,"cve":"CVE-2026-67277","id":3550,"kind":"epss","observed_at":1793665375,"payload":"{\"date\": \"2026-11-02\", \"epss\": 0.0156, \"percentile\": 0.75236}"},{"alert":1,"cve":"CVE-2026-67277","id":63,"kind":"kev","observed_at":1793665375,"payload":"{\"cveID\": \"CVE-2026-67277\", \"cwes\": [\"CWE-306\"], \"dateAdded\": \"2026-09-10\", \"dueDate\": \"2026-09-13\", \"forensicTriage\": \"No\", \"knownRansomwareCampaignUse\": \"Unknown\", \"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\", \"product\": \"RouterOS\", \"requiredAction\": \"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\\u2019s \\u201cForensics Triage Requirements\\u201d (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.\", \"shortDescription\": \"MikroTik RouterOS contains a missing authentication for critical function vulnerability which allows kernel memory disclosure and denial of service in the btest service.\", \"vendorProject\": \"MikroTik\", \"vulnerabilityName\": \"MikroTik RouterOS Missing Authentication for Critical Function Vulnerability\"}"}],"record":{"affected":[{"defaultStatus":"unaffected","product":"RouterOS","vendor":"Mikrotik","versions":[{"lessThan":"7.24.2","status":"affected","version":"7.24","versionType":"custom"},{"lessThan":"7.23.4","status":"affected","version":"7.0.0","versionType":"custom"},{"lessThan":"6.49.21","status":"affected","version":"6.0.0","versionType":"custom"}]}],"cna":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-67277","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-08T00:00:00+00:00","version":"2.0.3"},"type":"ssvc"}},{"other":{"content":{"dateAdded":"2026-09-10","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-67277"},"type":"kev"}}],"providerMetadata":{"dateUpdated":"2026-09-11T03:55:58.675Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-67277"}],"timeline":[{"lang":"en","time":"2026-09-10T00:00:00.000Z","value":"CVE-2026-67277 added to CISA KEV"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"RouterOS","vendor":"Mikrotik","versions":[{"lessThan":"7.24.2","status":"affected","version":"7.24","versionType":"custom"},{"lessThan":"7.23.4","status":"affected","version":"7.0.0","versionType":"custom"},{"lessThan":"6.49.21","status":"affected","version":"6.0.0","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:mikrotik:routeros:*:*:*:*:*:*:*:*","versionEndExcluding":"7.25.1","versionStartIncluding":"0.0.0","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"credits":[{"lang":"en","type":"finder","value":"S\u0142awomir Rozbicki (CERT.PL)"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<div><div>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.</div></div><div>This issue was fixed in versions:&nbsp;6.49.21 (Long-term),&nbsp;7.23.4 (Long-term)&nbsp;and&nbsp;7.24.2 (Stable)</div>"}],"value":"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.\n\n\n\nThis issue was fixed in versions:\u00a06.49.21 (Long-term),\u00a07.23.4 (Long-term)\u00a0and\u00a07.24.2 (Stable)"}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","description":"CWE-306 Missing authentication for critical function","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-05T20:39:44.166Z","orgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","shortName":"CERT-PL"},"references":[{"tags":["third-party-advisory"],"url":"https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve"},{"tags":["technical-description"],"url":"https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/"},{"tags":["exploit"],"url":"https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/"},{"tags":["vendor-advisory"],"url":"https://mikrotik.com/supportsec/september-2026-vulnerability/"},{"tags":["release-notes"],"url":"https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802"},{"tags":["release-notes"],"url":"https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801"},{"tags":["release-notes"],"url":"https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800"}],"source":{"discovery":"INTERNAL"},"title":"Kernel memory disclosure and denial of service in MikroTik RouterOS btest service","x_generator":{"engine":"Vulnogram 1.0.3"}}},"cveMetadata":{"assignerOrgId":"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6","assignerShortName":"CERT-PL","cveId":"CVE-2026-67277","datePublished":"2026-09-05T20:00:56.614Z","dateReserved":"2026-07-29T11:59:30.538Z","dateUpdated":"2026-09-11T03:55:58.675Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"cna_checked":1794111601,"cve":"CVE-2026-67277","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.\n\n\n\nThis issue was fixed in versions:\u00a06.49.21 (Long-term),\u00a07.23.4 (Long-term)\u00a0and\u00a07.24.2 (Stable)","epss":{"date":"2026-11-12","epss":0.0156,"percentile":0.75592},"epss_checked":1794522003,"first_seen":1793665375,"kev":{"cveID":"CVE-2026-67277","cwes":["CWE-306"],"dateAdded":"2026-09-10","dueDate":"2026-09-13","forensicTriage":"No","knownRansomwareCampaignUse":"Unknown","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","product":"RouterOS","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (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.","shortDescription":"MikroTik RouterOS contains a missing authentication for critical function vulnerability which allows kernel memory disclosure and denial of service in the btest service.","vendorProject":"MikroTik","vulnerabilityName":"MikroTik RouterOS Missing Authentication for Critical Function Vulnerability"},"kev_checked":1794522003,"products":"Mikrotik RouterOS","references":["https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve","https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/","https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/","https://mikrotik.com/supportsec/september-2026-vulnerability/","https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802","https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801","https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-67277"],"score":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","provider":"CERT-PL","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"solutions":"","state":"PUBLISHED","title":"Kernel memory disclosure and denial of service in MikroTik RouterOS btest service","updated_at":1794500401,"workarounds":""},"sources":[]}