CVE-2015-4216

Name: CVE-2015-4216
Creator: NVD / NIST
Published: 2015-06-26T10:59:03.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.32%

Last modified Jun 17, 2026

CVE-2015-4216 is a vulnerability of currently unknown severity. The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), and Security Management Virtual Appliance (SMAv) devices before 2015-06-25 uses the same default SSH root authorized key across different customers' installations, which makes it easier for remote attackers to bypass authentication by leveraging knowledge of a private key from another installation, aka Bug IDs CSCuu95988, CSCuu95994, and CSCuu96630.. EPSS estimates a 3.32% chance of exploitation in the next 30 days.

Description

The remote-support feature on Cisco Web Security Virtual Appliance (WSAv), Email Security Virtual Appliance (ESAv), and Security Management Virtual Appliance (SMAv) devices before 2015-06-25 uses the same default SSH root authorized key across different customers' installations, which makes it easier for remote attackers to bypass authentication by leveraging knowledge of a private key from another installation, aka Bug IDs CSCuu95988, CSCuu95994, and CSCuu96630.

Metrics

EPSS Probability

3.32%

87.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Cisco	Content Security Management Virtual Appliance	8.4.0.0150
Cisco	Content Security Management Virtual Appliance	9.0.0.087
Cisco	Email Security Virtual Appliance	8.0.0
Cisco	Email Security Virtual Appliance	8.5.6
Cisco	Email Security Virtual Appliance	8.5.7
Cisco	Email Security Virtual Appliance	9.0.0
Cisco	Web Security Virtual Appliance	7.7.5
Cisco	Web Security Virtual Appliance	8.0.5
Cisco	Web Security Virtual Appliance	8.5.0
Cisco	Web Security Virtual Appliance	8.5.1
Cisco	Web Security Virtual Appliance	8.6.0
Cisco	Web Security Virtual Appliance	8.7.0

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150625-ironportVendor Advisory
http://www.securityfocus.com/bid/75417Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1032725Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1032726Third Party Advisory, VDB Entry
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150625-ironportVendor Advisory
http://www.securityfocus.com/bid/75417Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1032725Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1032726Third Party Advisory, VDB Entry

Timeline

Published: Jun 26, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-4216?

How severe is CVE-2015-4216?

Severity scoring for CVE-2015-4216 is pending analysis. The EPSS model estimates a 3.32% probability of exploitation in the next 30 days.

How do I fix CVE-2015-4216?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-4216?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST