IP Phone 8821 Firmware vulnerabilities
3 known vulnerabilities in IP Phone 8821 Firmware from Cisco. 3 are rated high or critical, and 1 has been exploited in real attacks. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.
Latest first
- 7.5 High severity
Cisco Session Initiation Protocol (SIP) Software: Stack-based Buffer Overflow
A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 running Cisco SIP Software could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device. This vulne
- 7.5 High severity
Cisco Session Initiation Protocol (SIP) Software: Exposure of Sensitive Information to an Unauthorized Actor
A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerabil
- 9.8 Critical severity
Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Exploited
A vulnerability in the web server for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. The vulnerability is due to