VendorsCiscoip_phone_8821all versions
Vulnerabilities

Cisco IP Phone 8821 -

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

14CVEs
CVE-2020-3161
Cisco IP Phones Web Server Remote Code Execution and Denial of Service Vulnerability
Published 2020-04-15 · Analyzed
10.0KEV1 PoCEPSS 0.839
CVE-2019-1716
Cisco IP Phone 7800 Series and 8800 Series Remote Code Execution Vulnerability
Published 2019-03-22 · Modified
9.8EPSS 0.031
CVE-2019-1764
Cisco IP Phone 8800 Series Cross-Site Request Forgery Vulnerability
Published 2019-03-22 · Modified
8.8EPSS 0.007
CVE-2023-20018
A vulnerability in the web-based management interface of Cisco IP Phone 7800 and 8800 Series Phones could allow an unauthenticated, remote attacker to bypass authentication on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to access certain parts of the web interface that would normally require authentication.
Published 2023-01-19 · Modified
8.6EPSS 0.006
CVE-2019-1765
Cisco IP Phone 8800 Series Path Traversal Vulnerability
Published 2019-03-22 · Modified
8.1EPSS 0.014
CVE-2019-1763
Cisco IP Phone 8800 Series Authorization Bypass Vulnerability
Published 2019-03-22 · Modified
7.5EPSS 0.019
CVE-2025-20350
Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Denial of Service Vulnerability
Published 2025-10-15 · Analyzed
7.5EPSS 0.005
CVE-2025-20336
Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Information Disclosure Vulnerability
Published 2025-09-03 · Analyzed
7.5EPSS 0.004
CVE-2020-26140
An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The WEP, WPA, WPA2, and WPA3 implementations accept plaintext frames in a protected Wi-Fi network. An adversary can abuse this to inject arbitrary data frames independent of the network configuration.
Published 2021-05-11 · Modified
6.5EPSS 0.029
CVE-2025-20351
Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Cross-Site Scripting Vulnerability
Published 2025-10-15 · Analyzed
6.1EPSS 0.003
CVE-2020-26139
An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients.
Published 2021-05-11 · Modified
5.3EPSS 0.065
CVE-2025-20335
Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Firmware Information Arbitrary File Write Vulnerability
Published 2025-09-03 · Analyzed
5.3EPSS 0.004
CVE-2020-24588
The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets.
Published 2021-05-11 · Modified
3.5EPSS 0.036
CVE-2020-24587
The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed.
Published 2021-05-11 · Modified
2.6EPSS 0.026