Information disclosure in Cisco Video Phone 8875 and Desk Phone 9800 Series

1) Information disclosure

EUVDB-ID: #VU104102

Risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20158

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to insufficient validation of user-supplied input in the debug shell. A local administrator can send a specially crafted SSH client command and gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Video Phone 8875: All versions

Desk Phone 9800 Series: All versions

SIP IP Phone Software: 3.2(1)

CPE2.3

• cpe:2.3:h:cisco_systems:video_phone_8875:*:*:*:*:*:*:*:*
• cpe:2.3:h:cisco_systems:desk_phone_9800_series:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:sip_ip_phone_software:*:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:sip_ip_phone_software:3.2(1):*:*:*:*:*:*:*

External links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-info-disc-YyxsWStK

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.