CVE-2023-20221

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-08-16 · updated 2026-06-17
Weakness: CWE-352

Description

A vulnerability in the web-based management interface of Cisco IP Phone 6800, 7800, and 8800 Series with Multiplatform Firmware could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack against a user of the web-based management interface of an affected system. This vulnerability is due to insufficient CSRF protections for the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading an authenticated user of the interface to follow a crafted link. A successful exploit could allow the attacker to perform a factory reset of the affected device, resulting in a Denial of Service (DoS) condition.

Affected products

Cisco Ip Conference Phone 7832 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Conference Phone 8831 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Conference Phone 8832 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 6821 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 6825 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 6841 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 6851 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 6861 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 6871 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 7811 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 7821 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 7841 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 7861 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8800 Key Expansion Module With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8811 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8841 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8845 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8851 Key Expansion Module With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8851 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8861 Key Expansion Module With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8861 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Ip Phone 8865 With Multiplatform Firmware: 11-3-1mppsr4upg, 11-3-1msr2upg, 11.0.0, 11.0.1, 11.0.1_msr1-1, 11.0.2 (+25)
Cisco Video Phone 8875 Firmware: before 2.0 — fixed in 2.0

How to fix

Upgrade to a fixed version: Cisco Video Phone 8875 Firmware 2.0. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2023-20221 or the next vulnerability affects your stack