Medium severity5.3NVD Advisory· Published Jul 6, 2019· Updated Jun 17, 2026

CVE-2019-1922

Description

A vulnerability in Cisco SIP IP Phone Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected phone. The vulnerability is due to insufficient validation of input Session Initiation Protocol (SIP) packets. An attacker could exploit this vulnerability by altering the SIP replies that are sent to the affected phone during the registration process. A successful exploit could allow the attacker to cause the phone to reboot and not complete the registration process.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./IP Conference Phone 7832 Firmware
cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:-:*:*:*:*:*:*:*
Cisco Systems, Inc./IP Conference Phone 8832 Firmware2 versions
cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:11.5\(1\):*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:12.5\(1\):*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 7811 Firmware
cpe:2.3:o:cisco:ip_phone_7811_firmware:-:*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 7821 Firmware
cpe:2.3:o:cisco:ip_phone_7821_firmware:-:*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 7841 Firmware
cpe:2.3:o:cisco:ip_phone_7841_firmware:-:*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 7861 Firmware
cpe:2.3:o:cisco:ip_phone_7861_firmware:-:*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 8811 Firmware2 versions
cpe:2.3:o:cisco:ip_phone_8811_firmware:11.5\(1\):*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ip_phone_8811_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8811_firmware:12.5\(1\):*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 8841 Firmware2 versions
cpe:2.3:o:cisco:ip_phone_8841_firmware:11.5\(1\):*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ip_phone_8841_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8841_firmware:12.5\(1\):*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 8845 Firmware2 versions
cpe:2.3:o:cisco:ip_phone_8845_firmware:11.5\(1\):*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ip_phone_8845_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8845_firmware:12.5\(1\):*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 8851 Firmware2 versions
cpe:2.3:o:cisco:ip_phone_8851_firmware:11.5\(1\):*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ip_phone_8851_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8851_firmware:12.5\(1\):*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 8861 Firmware2 versions
cpe:2.3:o:cisco:ip_phone_8861_firmware:11.5\(1\):*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ip_phone_8861_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8861_firmware:12.5\(1\):*:*:*:*:*:*:*
Cisco Systems, Inc./IP Phone 8865 Firmware2 versions
cpe:2.3:o:cisco:ip_phone_8865_firmware:11.5\(1\):*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:cisco:ip_phone_8865_firmware:11.5\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8865_firmware:12.5\(1\):*:*:*:*:*:*:*
Cisco Systems, Inc./Sip IP Phone Softwarellm-create
Cisco Systems, Inc./IP Phone 7800 Seriesllm-create
Cisco Systems, Inc./IP Phone 8800 Series Firmwarecpe-rescue
Range: unspecified

Patches

Vulnerability mechanics

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-ip-phone-sip-dosnvdVendor Advisory

News mentions

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