{"id":"CVE-2026-86060","published":"2026-09-05T20:17:18Z","modified":"2026-09-11T12:52:16Z","title":"MikroTik RouterOS Improper Neutralization of Argument Delimiters in a Command Vulnerability","vendor":"MikroTik","product":"RouterOS","tier":"core","eol":null,"description":{"text":"RouterOS contains an argument-handling flaw in the SSH login\npath involving usernames that begin with a prohibited character, allowing for the trusted RouterOS policy mask to be changed, leading to privilege escalation. Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper.This issue was fixed in versions: 6.49.21 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is an argument-handling weakness in the SSH login path of MikroTik RouterOS, triggered by usernames that begin with a prohibited character. An attacker who can reach the SSH service over the network without authentication can exploit it to alter RouterOS's trusted policy mask and escalate privileges, with no user interaction required.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:54:00Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.06392,"percentile":0.93659,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2026-09-10","dueDate":"2026-09-13","ransomware":false,"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.","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-2026-86060","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-09-05","exploitedFirstSeen":"2026-09-05","ransomware":false,"evidence":[{"url":"https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/","date":"2026-09-05"},{"url":"https://euvd.enisa.europa.eu/enisa/EUVD-2026-72029","date":"2026-09-05"},{"url":"https://www.socdefenders.ai/item/68ceafdc-8b37-4816-acb6-8066b031e965","date":"2026-09-05"},{"url":"https://www.acn.gov.it/portale/w/mikrotik-rilevato-sfruttamento-in-rete-di-nuove-vulnerabilita","date":"2026-09-06"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-09-10"},{"url":"https://cydome.io/maritime-cybersecurity-bulletin-september-11th-2026/","date":"2026-09-11"},{"url":"https://cert.pl/en/posts/2026/09/mikrotrick-technical-analysis/","date":"2026-09-22"}],"evidenceTotal":7,"provenance":"source"},"exploited":true,"otx":{"pulseCount":34,"pulses":[{"name":"Actively_Exploited_Kev | Oct 31, 2026","url":"https://otx.alienvault.com/pulse/6ae4aefab0c2191cecd41862","created":"2026-10-30"},{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"}],"provenance":"machine"},"cwes":[{"id":"CWE-88","name":"Improper Neutralization of Argument Delimiters in a Command"}],"references":[{"url":"https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve","tags":["Third Party Advisory"]},{"url":"https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/","tags":["Mitigation","Third Party Advisory"]},{"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","tags":["Release Notes"]},{"url":"https://mikrotik.com/supportsec/september-2026-vulnerability/","tags":["Vendor Advisory"]},{"url":"https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-86060","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Unauthenticated network-exposed SSH login path is exploited","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Exploitation requires an unauthenticated SSH session to reach the RouterOS login helper","start":220,"end":307}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1068","name":"Exploitation for Privilege Escalation","tactics":["privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Policy mask change yields privilege escalation","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allowing for the trusted RouterOS policy mask to be changed, leading to privilege escalation","start":126,"end":218}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-72029","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-72029","exploited":true,"exploitedSince":"2026-09-05","provenance":"source"},"exploits":[{"id":52683,"url":"https://www.exploit-db.com/exploits/52683","title":"MikroTrick_ 7.24_ 7.24.2_ 7.0.0_ 7.23.4_ 6.0.0_ 6.49.21 - RCE","type":"remote","platform":"multiple","date":"2026-09-24","verified":false,"provenance":"source"}],"exploitSources":{"exploitdb":{"count":1,"earliest":"2026-09-24"},"pocGithub":{"count":3,"skipped":0,"earliest":"2026-09-10","earliestUrl":"https://github.com/bahirul/cve-2026-86060","repos":[{"name":"digiprosec/MicroTrick","url":"https://github.com/digiprosec/MicroTrick","stars":58,"created":"2026-09-22"},{"name":"gagaltotal/CVE-2026-mikrotik-poc","url":"https://github.com/gagaltotal/CVE-2026-mikrotik-poc","stars":7,"created":"2026-09-25"},{"name":"bahirul/cve-2026-86060","url":"https://github.com/bahirul/cve-2026-86060","stars":1,"created":"2026-09-10"}]},"first":{"date":"2026-09-10","source":"PoC-in-GitHub","url":"https://github.com/bahirul/cve-2026-86060"},"provenance":"source"},"exploitRefs":["https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1068"],"provenance":"ai"}],"timeline":[{"date":"2026-09-05","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86060","provenance":"source"},{"date":"2026-09-05","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/","provenance":"source"},{"date":"2026-09-05","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-72029","provenance":"source"},{"date":"2026-09-10","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub; later: Exploit-DB 2026-09-24","url":"https://github.com/bahirul/cve-2026-86060","provenance":"source"},{"date":"2026-09-10","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"}],"speed":{"daysToPublicExploit":5,"firstExploitFrom":"PoC-in-GitHub","daysToKev":5},"priority":{"score":78.6,"factors":[{"name":"In a KEV 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