CVE-2026-56719
MikroTik RouterOS < 7.24 Out-of-Bounds Read via SMB1 SessionSetupAndX
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
MikroTik RouterOS before 7.24 contains an out-of-bounds read vulnerability in the userspace SMB daemon that allows unauthenticated attackers to read beyond the end of the request buffer by supplying a crafted uniPwdLen field value in a minimal SMB1 SessionSetupAndX frame. The out-of-bounds read occurs in the SessionSetupAndX handler before any credential validation, potentially exposing sensitive memory contents.
| CWE | CWE-125 |
| Vendor | mikrotik |
| Product | routeros |
| Published | Sep 16, 2026 |
| Last Updated | Sep 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Affected Versions
MikroTik / RouterOS
0 ≤ 6.49.18 7.0.0 ≤ 7.11.2
References
Credits
eeee VulnCheck