{"id":"CVE-2026-67281","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-67281","summary":"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…","details":"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: 6.49.21 (Lont-term), 7.23.4 (Lont-term) and 7.24.2 (Stable)","published":"2026-09-05T20:17:18.547","modified":"2026-09-05T20:17:18.547","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve"},{"type":"WEB","url":"https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/"},{"type":"WEB","url":"https://forum.mikrotik.com/t/6-49-21-long-term-is-released/272802"},{"type":"WEB","url":"https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801"},{"type":"WEB","url":"https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800"},{"type":"WEB","url":"https://mikrotik.com/supportsec/september-2026-vulnerability/"},{"type":"WEB","url":"https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-05T20:17:18.547"}}