CVE-2017-6656

Name: CVE-2017-6656
Creator: NVD / NIST
Published: 2017-06-13T06:29:00.863+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.66%

Last modified Jun 17, 2026

CVE-2017-6656 is a vulnerability of currently unknown severity. A vulnerability in Session Initiation Protocol (SIP) call handling of Cisco IP Phone 8800 Series devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the SIP process unexpectedly restarting. All active phone calls are dropped as the SIP process restarts. EPSS estimates a 1.66% chance of exploitation in the next 30 days.

Description

A vulnerability in Session Initiation Protocol (SIP) call handling of Cisco IP Phone 8800 Series devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the SIP process unexpectedly restarting. All active phone calls are dropped as the SIP process restarts. More Information: CSCvc29353. Known Affected Releases: 11.0(0.1). Known Fixed Releases: 11.0(0)MP2.153 11.0(0)MP2.62.

Metrics

EPSS Probability

1.66%

73.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Ip Phone 8800 Series	11.0\(0.1\)

References

http://www.securityfocus.com/bid/98996Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038636
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-sipVendor Advisory
http://www.securityfocus.com/bid/98996Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038636
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-sipVendor Advisory

Timeline

Published: Jun 13, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-6656?

How severe is CVE-2017-6656?

Severity scoring for CVE-2017-6656 is pending analysis. The EPSS model estimates a 1.66% probability of exploitation in the next 30 days.

How do I fix CVE-2017-6656?

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-2017-6656?

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

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Source: NVD / NIST