Product by Cisco
Cisco IP Phone 8821 Firmware 11.0(4)sr3
14 known vulnerabilities in Cisco IP Phone 8821 Firmware 11.0(4)sr3 (Cisco), 1 of them actively exploited (CISA KEV).
Key figures
14
Vulnerabilities
1
Actively exploited (KEV)
0
Used by ransomware
2
Critical
Vulnerabilities
Actively exploited vulnerabilities (CISA KEV) first, then by priority. Click a column header to re-sort the table.
| Critical | CVE-2020-3161 | Cisco IP Phones Web Server Remote Code Execution and Denial of Service Vulnerability In CISA KEValso in 11 other products | 9.8 | |
| Critical | CVE-2019-1716 | Cisco IP Phone 7800 Series and 8800 Series Remote Code Execution Vulnerability | 7.5 | |
| Medium | CVE-2020-26139 | NetBSD: Denial of Service | 5.3 | |
| Medium | CVE-2020-26140 | Siemens Scalance W788-2 Firmware: security vulnerability | 6.5 | |
| High | CVE-2019-1763 | Cisco IP Phone 8800 Series Authorization Bypass Vulnerability | 7.5 | |
| High | CVE-2019-1765 | Cisco IP Phone 8800 Series Path Traversal Vulnerability | 8.1 | |
| Low | CVE-2020-24588 | Ieee 802.11: security vulnerability | 3.5 | |
| Low | CVE-2020-24587 | Ieee 802.11: security vulnerability | 2.6 | |
| High | CVE-2023-20018 | Cisco Session Initiation Protocol (SIP) Software: Authentication Bypass Using an Alternate Path or Channel | 8.6 | |
| High | CVE-2019-1764 | Cisco IP Phone 8800 Series Cross-Site Request Forgery Vulnerability | 8.1 | |
| High | CVE-2025-20350 | Cisco Session Initiation Protocol (SIP) Software: Stack-based Buffer Overflow | 7.5 | |
| High | CVE-2025-20336 | Cisco Session Initiation Protocol (SIP) Software: Exposure of Sensitive Information to an Unauthorized Actor | 5.3 | |
| Medium | CVE-2025-20351 | Cisco Session Initiation Protocol (SIP) Software: Cross-site Scripting | 6.1 | |
| Medium | CVE-2025-20335 | Cisco Session Initiation Protocol (SIP) Software: Improper Access Control | 5.3 |