CVE-2017-6297

MEDIUM

Mikrotik Routeros - Missing Encryption

Title source: rule

Description

The L2TP Client in MikroTik RouterOS versions 6.83.3 and 6.37.4 does not enable IPsec encryption after a reboot, which allows man-in-the-middle attackers to view transmitted data unencrypted and gain access to networks on the L2TP server by monitoring the packets for the transmitted data and obtaining the L2TP secret.

References (2)

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/96447

[Exploit, Third Party Advisory] https://blog.milne.it/2017/02/24/mikrotik-routeros-security-vulnerability-l2tp-tunnel-unencrypted-cve-2017-6297/

Scores

CVSS v3 5.9

EPSS 0.0011

EPSS Percentile 29.0%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

CWE

CWE-311

Status published

Affected Products (3)

mikrotik/routeros

n/a/n/a

Timeline

Published Feb 27, 2017

Tracked Since Feb 18, 2026