CVE-2026-67281 - Unauthenticated file read in Mikrotik RouterOS
Brief
CVE ID : CVE-2026-67281
Published : Sept. 5, 2026, 8:17 p. m.
- 27 minutes ago
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.
- 21 (Lont-term), 7.
- 4 (Lont-term) and 7.
- 2 (Stable)
Severity: 8.7
- HIGH
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