HOMEVULNERABILITIESCVE-2017-6297
MEDIUM

CVE-2017-6297

CWE-311Published: February 27, 2017· Updated: Jun 17, 2026

5.9
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2017-6297 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

mikrotik1 product(s)
routeros
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/96447
ADVISORYhttps://blog.milne.it/2017/02/24/mikrotik-routeros-security-vulnerability-l2tp-tunnel-unencrypted-cve-2017-6297/
ADVISORYhttp://www.securityfocus.com/bid/96447
ADVISORYhttps://blog.milne.it/2017/02/24/mikrotik-routeros-security-vulnerability-l2tp-tunnel-unencrypted-cve-2017-6297/

All References (4)

→
http://www.securityfocus.com/bid/96447Third Party Advisory · VDB Entry
→
https://blog.milne.it/2017/02/24/mikrotik-routeros-security-vulnerability-l2tp-tunnel-unencrypted-cve-2017-6297/Exploit · Third Party Advisory
→
http://www.securityfocus.com/bid/96447Third Party Advisory · VDB Entry
→
https://blog.milne.it/2017/02/24/mikrotik-routeros-security-vulnerability-l2tp-tunnel-unencrypted-cve-2017-6297/Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2017-6297
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-311
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 27, 2017

Related CVEs (CWE-311)

CVE-2019-12924
9.8
CVE-2017-9632
9.8
CVE-2019-11367
9.8
CVE-2018-10698
9.8
CVE-2017-9854
9.8
CVE-2018-20100
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-6297 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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