CVE-2025-20158 Cisco Video Phone 8875 and Desk Phone 9800 Series Information Disclosure Vulnerability

Medium 4.4 Published 19 Feb 2025 Updated 19 Feb 2025

An authenticated local attacker with SSH access can exploit a debug shell flaw to read sensitive information from Cisco IP phones.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-20158?

CVE-2025-20158 is a medium-severity vulnerability in Cisco Session Initiation Protocol (SIP) Software, published on 19 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability in the debug shell of Cisco Video Phone 8875 and Cisco Desk Phone 9800 Series could allow an authenticated, local attacker to access sensitive information on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials with SSH access on the affected device. SSH access is disabled by default. This vulnerability is due to insufficient validation of user-supplied input by the debug shell of an affected device. An attacker could exploit this vulnerability by sending a crafted SSH client command to the CLI. A successful exploit could allow the attacker to access sensitive information on the underlying operating system.

Weakness: CWE-200

Which versions are affected by CVE-2025-20158?

It affects 5 products.

Products include Cisco Desk Phone 9841 Firmware, Cisco Desk Phone 9851 Firmware, Cisco Desk Phone 9861 Firmware, Cisco Desk Phone 9871 Firmware, Cisco Video Phone 8875 Firmware.

How do I fix CVE-2025-20158?

No fix has been published for CVE-2025-20158 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-20158 being exploited?

There is no known exploitation of CVE-2025-20158 in the wild and no public exploit code.

Sources

Also known as GHSA-fppv-gxpq-7mg9.