CVE-2025-20351

Published Oct 15, 2025

Last updated 5 months ago

Overview

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 running Cisco SIP Software could allow an unauthenticated, remote attacker to conduct XSS attacks against a user of the web UI. This vulnerability exists because the web UI of an affected device does not sufficiently validate user-supplied input. An attacker could exploit this vulnerability by persuading a user 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. Note: To exploit this vulnerability, the phone must be registered to Cisco Unified Communications Manager and have Web Access enabled. Web Access is disabled by default.
Source
psirt@cisco.com
NVD status
Analyzed
Products
desk_phone_9871_firmware, desk_phone_9841_firmware, desk_phone_9851_firmware, desk_phone_9861_firmware, ip_phone_8865_firmware, ip_phone_7811_firmware, ip_phone_7821_firmware, ip_phone_7841_firmware, ip_phone_7861_firmware, ip_phone_8811_firmware, ip_phone_8832_firmware, ip_phone_8841_firmware, ip_phone_8845_firmware, ip_phone_8851_firmware, ip_phone_8861_firmware, ip_phone_8821_firmware, video_phone_8875_firmware

Risk scores

CVSS 3.1

Type
Primary
Base score
6.1
Impact score
2.7
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Severity
MEDIUM

Weaknesses

psirt@cisco.com
CWE-79

Social media

Hype score
Not currently trending

Configurations