CVE-2017-6630

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-05-22 · updated 2026-06-17
Weakness: CWE-399

Description

A vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IP Phone 8851 11.0(0.1) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to an abnormal SIP message. An attacker could exploit this vulnerability by manipulating the CANCEL packet. An exploit could allow the attacker to cause a disruption of service to the phone. Cisco Bug IDs: CSCvc34795.

Affected products

Cisco IP Phone 8800 Series: 11.0(0.1)

References

http://www.securityfocus.com/bid/98533
http://www.securitytracker.com/id/1038511
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-sip
http://www.securityfocus.com/bid/98533
http://www.securitytracker.com/id/1038511
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-sip

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