Vulnerabilities > Cisco > IP Phone 7821 Firmware
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2019-07-06 | CVE-2019-1922 | NULL Pointer Dereference vulnerability in Cisco products 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. | 7.5 |
| 2019-05-03 | CVE-2019-1635 | Improper Handling of Exceptional Conditions vulnerability in Cisco products A vulnerability in the call-handling functionality of Session Initiation Protocol (SIP) Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. | 7.5 |
| 2019-02-21 | CVE-2019-1684 | Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Cisco products A vulnerability in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation for the Cisco IP Phone 7800 and 8800 Series could allow an unauthenticated, adjacent attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. | 6.5 |