CVE-2026-67281 (GCVE-0-2026-67281)
Vulnerability from cvelistv5 – Published: 2026-09-05 20:00 – Updated: 2026-09-08 15:32
VLAI
EPSS
VEX
Title
Unauthenticated file read in Mikrotik RouterOS
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 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)
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:31 UTC
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/09/mikrotik-routeros-cve | third-party-advisory |
| https://cert.pl/en/posts/2026/09/vulnerabilities-… | technical-description |
| https://npratley.net/reversing-mikrotiks-silent-p… | exploit |
| https://mikrotik.com/supportsec/september-2026-vu… | vendor-advisory |
| https://forum.mikrotik.com/t/7-23-4-long-term-is-… | release-notes |
| https://forum.mikrotik.com/t/7-24-2-stable-is-rel… | release-notes |
Impacted products
Date Public
2026-09-05 00:00
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.