CVE-2017-6656

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-06-13 · updated 2026-06-17
Weakness: CWE-20

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.

Affected products

Cisco Ip Phone 8800 Series: 11.0(0.1)

References

http://www.securityfocus.com/bid/98996
http://www.securitytracker.com/id/1038636
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-sip
http://www.securityfocus.com/bid/98996
http://www.securitytracker.com/id/1038636
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-sip

Get alerted when CVE-2017-6656 or the next vulnerability affects your stack