High severityNVD Advisory· Published Sep 5, 2026· Updated Sep 5, 2026
CVE-2026-67281
CVE-2026-67281
Description
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 (Long-term), 7.23.4 (Long-term) and 7.24.2 (Stable)
Affected products
1Patches
Vulnerability mechanics
References
7- cert.pl/en/posts/2026/09/mikrotik-routeros-cvenvd
- cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/nvd
- forum.mikrotik.com/t/6-49-21-long-term-is-released/272802nvd
- forum.mikrotik.com/t/7-23-4-long-term-is-released/272801nvd
- forum.mikrotik.com/t/7-24-2-stable-is-released/272800nvd
- mikrotik.com/supportsec/september-2026-vulnerability/nvd
- npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/nvd
News mentions
0No linked articles in our index yet.