Is CVE-2017-5243 being actively exploited?

CVE-2017-5243 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2017-5243?

CVE-2017-5243 has a CVSS 3.0 base score of 8.5 (HIGH).

CVE-2017-5243

HIGH · CVSS 8.5EPSS 0.5%EU EUVD

The default SSH configuration in Rapid7 Nexpose hardware appliances shipped before June 2017 does not specify desired algorithms for key exchange and other important functions. As a result, it falls back to allowing ALL algorithms supported by the relevant version of OpenSSH and makes the installations vulnerable to a range of MITM, downgrade, and decryption attacks.

Key facts

CVSS score: 8.5 (v3.0)
Severity: HIGH
CVSS vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-327
EPSS score: 0.5% (42th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2017-14348)
Published: June 6, 2017
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2017-14348 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.

View on the EU Vulnerability Database

Affected products

rapid7 / nexpose

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Rapid7™ Nexpose™ Vulnerability Management and Penetration Testing System V5.1 - Rapid7 LLC - Common Criteria 383-4-148 - archived

References

https://community.rapid7.com/community/nexpose/blog/2017/05/31/r7-2017-13-nexpose-hardware-appliance-ssh-enabled-obsolete-algorithms-cve-2017-5243(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain