{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-67281", "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "state": "PUBLISHED", "assignerShortName": "CERT-PL", "dateReserved": "2026-07-29T11:59:30.538Z", "datePublished": "2026-09-05T20:00:58.457Z", "dateUpdated": "2026-09-05T20:40:58.915Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "shortName": "CERT-PL", "dateUpdated": "2026-09-05T20:40:58.915Z"}, "title": "Unauthenticated file read in Mikrotik RouterOS", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-824", "description": "CWE-824 Access of uninitialized pointer", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "affected": [{"vendor": "Mikrotik", "product": "RouterOS", "versions": [{"status": "affected", "version": "7.24", "lessThan": "7.24.2", "versionType": "custom"}, {"status": "affected", "version": "7.0.0", "lessThan": "7.23.4", "versionType": "custom"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.49.21", "versionType": "custom"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mikrotik:routeros:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.0.0", "versionEndExcluding": "7.25.1"}]}]}], "descriptions": [{"lang": "en", "value": "RouterOS WebFig contains an unauthenticated file-read vulnerability in the /jsproxy path where a newly allocated session retains a stale uninitialized principal pointer used for file authorization. An unauthenticated attacker can prepare the allocator so that the file-serving path dereferences this pointer with sufficient rights, then supply parent-directory components in an encrypted URI to escape the WebFig file namespace and disclose root-owned files, including configuration stores containing credentials.This issue was fixed in versions:\u00a06.49.21 (Long-term),\u00a07.23.4 (Long-term)\u00a0and\u00a07.24.2 (Stable)", "supportingMedia": [{"type": "text/html", "base64": false, "value": "RouterOS WebFig contains an unauthenticated file-read vulnerability in the /jsproxy path where a newly allocated session retains a stale uninitialized principal pointer used for file authorization. An unauthenticated attacker can prepare the allocator so that the file-serving path dereferences this pointer with sufficient rights, then supply parent-directory components in an encrypted URI to escape the WebFig file namespace and disclose root-owned files, including configuration stores containing credentials.<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>"}]}], "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": ["technical-description"]}, {"url": "https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/", "tags": ["exploit"]}, {"url": "https://mikrotik.com/supportsec/september-2026-vulnerability/", "tags": ["vendor-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"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "S\u0142awomir Rozbicki (CERT.PL)", "type": "finder"}], "source": {"discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.3"}}}}

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