CVE-2026-67281
Unauthenticated file read in Mikrotik RouterOS
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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 affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)
| CWE | CWE-824 CWE-22 |
| Vendor | mikrotik |
| Product | routeros |
| Published | Sep 5, 2026 |
| Last Updated | Sep 8, 2026 |
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Affected Versions
Mikrotik / RouterOS
7.24 < 7.24.2 7.20 < 7.23.4
References
cert.pl: https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve cert.pl: https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/ npratley.net: https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/ mikrotik.com: https://mikrotik.com/supportsec/september-2026-vulnerability/ forum.mikrotik.com: https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801 forum.mikrotik.com: https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800
Credits
Sławomir Rozbicki (CERT.PL)