CVE-2024-20445: Cisco IP Phone 7800, 8800, and 9800 Series Information Disclosure Vulnerability

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-06 · updated 2026-06-17
Weakness: CWE-200

Description

A vulnerability in the web UI of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerability is due to improper storage of sensitive information within the web UI of Session Initiation Protocol (SIP)-based phone loads. An attacker could exploit this vulnerability by browsing to the IP address of a device that has Web Access enabled. A successful exploit could allow the attacker to access sensitive information, including incoming and outgoing call records. Note: Web Access is disabled by default.

Affected products

Cisco Desk Phone 9841 Firmware: 3.1(1), 3.1(1)-sr1
Cisco Desk Phone 9851 Firmware: 3.1(1), 3.1(1)-sr1
Cisco Desk Phone 9861 Firmware: 3.1(1), 3.1(1)-sr1
Cisco Desk Phone 9871 Firmware: 3.1(1), 3.1(1)-sr1
Cisco Ip Conference Phone 7832 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Conference Phone 8831 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Conference Phone 8832 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 7811 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 7821 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 7841 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 7861 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 8811 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 8841 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 8845 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 8851 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 8851Nr Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Ip Phone 8861 Firmware: before 14.3\(1\) — fixed in 14.3\(1\)
Cisco Video Phone 8875 Firmware: before 2.3\(1\); 2.3(1), 2.3(1)-sr1 — fixed in 2.3\(1\)

How to fix

Upgrade to a fixed version: Cisco Ip Conference Phone 7832 Firmware 14.3\(1\); Cisco Ip Conference Phone 8831 Firmware 14.3\(1\); Cisco Ip Conference Phone 8832 Firmware 14.3\(1\); Cisco Ip Phone 7811 Firmware 14.3\(1\); Cisco Ip Phone 7821 Firmware 14.3\(1\); Cisco Ip Phone 7841 Firmware 14.3\(1\); Cisco Ip Phone 7861 Firmware 14.3\(1\); Cisco Ip Phone 8811 Firmware 14.3\(1\); Cisco Ip Phone 8841 Firmware 14.3\(1\); Cisco Ip Phone 8845 Firmware 14.3\(1\); Cisco Ip Phone 8851 Firmware 14.3\(1\); Cisco Ip Phone 8851Nr Firmware 14.3\(1\). Check the vendor advisory for mitigations.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-infodisc-sbyqQVbG

Get alerted when CVE-2024-20445 or the next vulnerability affects your stack