CVE-2026-67281

High

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 affects only 7.x branch was fixed in versions: 7.23.4 (Long-term) and 7.24.2 (Stable)

SeverityHigh
CVSS7.5
Exploit probability—
ProductMikrotik Routeros
PublishedSep 5, 2026
First seenSep 5, 2026

How to fix

Affected products

ProductAffected versionsFixed in
mikrotik routeros7.20 ≤ v < 7.23.4, 7.24 ≤ v < 7.24.27.23.4, 7.24.2

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