CVE-CVE-2025-20351 | MEDIUM Severity | CVEDatabase.com

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: required
Scope: changed
Confidentiality: low
Integrity: low
Availability: none
Weaknesses: CWE-79

Metadata

Primary Vendor: CISCO
Published: 10/15/2025
Last Modified: 12/4/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

cisco : desk_phone_9871_firmwarecisco : desk_phone_9841_firmwarecisco : desk_phone_9851_firmwarecisco : desk_phone_9861_firmwarecisco : ip_phone_8865_firmwarecisco : ip_phone_8865_firmwarecisco : ip_phone_8865_firmwarecisco : ip_phone_7811_firmwarecisco : ip_phone_7811_firmwarecisco : ip_phone_7811_firmwarecisco : ip_phone_7821_firmwarecisco : ip_phone_7821_firmwarecisco : ip_phone_7821_firmwarecisco : ip_phone_7841_firmwarecisco : ip_phone_7841_firmwarecisco : ip_phone_7841_firmwarecisco : ip_phone_7861_firmwarecisco : ip_phone_7861_firmwarecisco : ip_phone_7861_firmwarecisco : ip_phone_8811_firmwarecisco : ip_phone_8811_firmwarecisco : ip_phone_8811_firmwarecisco : ip_phone_8832_firmwarecisco : ip_phone_8832_firmwarecisco : ip_phone_8832_firmwarecisco : ip_phone_8841_firmwarecisco : ip_phone_8841_firmwarecisco : ip_phone_8841_firmwarecisco : ip_phone_8845_firmwarecisco : ip_phone_8845_firmwarecisco : ip_phone_8845_firmwarecisco : ip_phone_8851_firmwarecisco : ip_phone_8851_firmwarecisco : ip_phone_8851_firmwarecisco : ip_phone_8861_firmwarecisco : ip_phone_8861_firmwarecisco : ip_phone_8861_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : ip_phone_8821_firmwarecisco : video_phone_8875_firmwarecisco : video_phone_8875_firmwarecisco : video_phone_8875_firmwarecisco : video_phone_8875_firmware

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