Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2017-6297

CVE-2017-6297MEDIUM

n/a n/a — The L2TP Client in MikroTik RouterOS versions 6.38.3 and 6.37.4 does not enable IPsec encryption after a reboot, which allows man-in-the-…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   N   N  U  H  N  N    5.9   .0074   53.1     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Feb 23  Reserved by mitre
  Feb 27  Published (CNA: mitre)
  Sep 16  ENRICHED — CVE-2017-6297. Received CVSS 5.9 and CPE data from NVD.
  Sep 16  EXPLOIT PUBLISHED — CVE-2017-6297. Public exploit reference added.

CWE-311 · CNA: mitre · CVSS v3.0 · 2 references · NVD status: Modified

Description

The L2TP Client in MikroTik RouterOS versions 6.38.3 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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
February 23, 2017	Reserved	Reserved by mitre
February 27, 2017	Published	Published (CNA: mitre)
September 16, 2026	ENRICHED	ENRICHED — CVE-2017-6297. Received CVSS 5.9 and CPE data from NVD.
September 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2017-6297. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-311

References (2)

http://www.securityfocus.com/bid/96447 [Third 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]

Authoritative record: CVE-2017-6297 at cve.org

Weaknesses: CWE-311

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2017-6297 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.