CVE-2017-6630
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.
Does this matter?
Lower severity and a low EPSS score (2.37%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 2.37% probability · 84th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- cisco/ip phone 8800 series firmware
- Source
- psirt@cisco.com
EPSS 2.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/98533Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038511
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-sipVendor Advisory
- http://www.securityfocus.com/bid/98533Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038511
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-sipVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.