CVE-2017-6656

5.9 mediumEPSS 1.7%

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.

Severity

CVSS 3.0

5.9 medium

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 76% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2017-06-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cisco:ip_phone_8800_series

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

Check your stack JSON