What is CVE-2015-6358?

CVE-2015-6358 is a medium-severity vulnerability in Cisco Pvc2300, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2017-10-12.

How severe is CVE-2015-6358?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2015-6358 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Cisco Pvc2300

CVE-2015-6358

Multiple Cisco embedded devices use hardcoded X.509 certificates and SSH host keys embedded in the firmware, which allows remote attackers to defeat cryptographic protection mechanisms and conduct man-in-the-middle attacks by leveraging knowledge of these certificates and keys from another installation, aka Bug IDs CSCuw46610, CSCuw46620, CSCuw46637, CSCuw46654, CSCuw46665, CSCuw46672, CSCuw46677, CSCuw46682, CSCuw46705, CSCuw46716, CSCuw46979, CSCuw47005, CSCuw47028, CSCuw47040, CSCuw47048, CSCuw47061, CSCuw90860, CSCuw90869, CSCuw90875, CSCuw90881, CSCuw90899, and CSCuw90913.

Vulnerability class: Improper Certificate Validation

Published 2017-10-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.013 (70.3th percentile), scored 2026-10-24.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.kb.cert.org/vuls/id/566724 (US Government Resource, Third Party Advisory, third-party-advisory)
www.securitytracker.com/id/1034258 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/78047 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1034255 (VDB Entry, Third Party Advisory, vdb-entry)
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151125… (vendor-advisory, Patch, Issue Tracking, Vendor Advisory)
www.securitytracker.com/id/1034257 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1034256 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2015-6358?: CVE-2015-6358 is a medium-severity vulnerability in Cisco Pvc2300, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2017-10-12.
How severe is CVE-2015-6358?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2015-6358 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.