CVE-2019-16008: Cisco IP Phone 6800, 7800, and 8800 Series with Multiplatform Firmware Cross-Site Scripting Vulnerability

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-01-26 · updated 2026-06-17
Weakness: CWE-79

Description

A vulnerability in the web-based GUI of Cisco IP Phone 6800, 7800, and 8800 Series with Multiplatform Firmware could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based interface of an affected system. The vulnerability is due to insufficient validation of user-supplied input by the web-based GUI of an affected system. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Affected products

Cisco Ip Phone 6821 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 6825 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 6841 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 6851 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 6861 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 6871 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 7811 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 7821 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 7832 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 7841 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 7861 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 8811 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 8831 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 8832 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 8841 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 8845 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 8851 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 8861 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)
Cisco Ip Phone 8865 Firmware: before 11.3\(1\) — fixed in 11.3\(1\)

How to fix

Upgrade to a fixed version: Cisco Ip Phone 6821 Firmware 11.3\(1\); Cisco Ip Phone 6825 Firmware 11.3\(1\); Cisco Ip Phone 6841 Firmware 11.3\(1\); Cisco Ip Phone 6851 Firmware 11.3\(1\); Cisco Ip Phone 6861 Firmware 11.3\(1\); Cisco Ip Phone 6871 Firmware 11.3\(1\); Cisco Ip Phone 7811 Firmware 11.3\(1\); Cisco Ip Phone 7821 Firmware 11.3\(1\); Cisco Ip Phone 7832 Firmware 11.3\(1\); Cisco Ip Phone 7841 Firmware 11.3\(1\); Cisco Ip Phone 7861 Firmware 11.3\(1\); Cisco Ip Phone 8811 Firmware 11.3\(1\). Check the vendor advisory for mitigations.

References

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