CVE-2026-67281

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)

CVSS

No CVSS.

References

Link	Resource
https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve
https://cert.pl/en/posts/2026/09/vulnerabilities-in-mikrotik-routeros-actively-exploited/
https://forum.mikrotik.com/t/7-23-4-long-term-is-released/272801
https://forum.mikrotik.com/t/7-24-2-stable-is-released/272800
https://mikrotik.com/supportsec/september-2026-vulnerability/
https://npratley.net/reversing-mikrotiks-silent-patch-the-routeros-7-23-4-fix-they-wouldnt-explain/

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-05 20:17

Updated : 2026-09-08 16:18

NVD link : CVE-2026-67281

Mitre link : CVE-2026-67281

CVE.ORG link : CVE-2026-67281

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-824

Access of Uninitialized Pointer

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