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Vulnerabilities of Cisco Cisco Session Initiation Protocol (SIP) Software

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CVE Summary Score Published
CVE-2026-20281 A vulnerability in Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 that… 7.5 High Sep 2, 2026
CVE-2025-20351 A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video… 6.1 Medium Oct 15, 2025
CVE-2025-20350 A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video… 7.5 High Oct 15, 2025
CVE-2025-20335 A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and… 5.3 Medium Sep 3, 2025
CVE-2025-20336 A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and… 5.3 Medium Sep 3, 2025
CVE-2025-20158 A vulnerability in the debug shell of Cisco Video Phone 8875 and Cisco Desk Phone 9800 Series could allow an… 4.4 Medium Feb 19, 2025
CVE-2021-1379 Multiple vulnerabilities in the Cisco Discovery Protocol and Link Layer Discovery Protocol (LLDP) implementations… 6.5 Medium Nov 18, 2024
CVE-2024-20534 A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 6800, 7800, and 8800 Series, and Cisco… 4.8 Medium Nov 6, 2024
CVE-2024-20533 A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 6800, 7800, and 8800 Series, and Cisco… 4.8 Medium Nov 6, 2024
CVE-2024-20445 A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video… 5.3 Medium Nov 6, 2024
CVE-2023-20265 A vulnerability in the web-based management interface of a small subset of Cisco IP Phones could allow an authenticated,… 5.5 Medium Nov 21, 2023
CVE-2023-20018 A vulnerability in the web-based management interface of Cisco IP Phone 7800 and 8800 Series Phones could allow an… 8.6 High Jan 19, 2023
CVE-2022-20968 A vulnerability in the Cisco Discovery Protocol processing feature of Cisco IP Phone 7800 and 8800 Series firmware could… 8.1 High Dec 8, 2022
CVE-2022-20660 A vulnerability in the information storage architecture of several Cisco IP Phone models could allow an unauthenticated,… 4.6 Medium Jan 14, 2022

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