CVE-2025-20351
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.
How to fix
- cisco ip_phone_8865_firmware14.3\(1\) or later
- cisco ip_phone_7811_firmware14.3\(1\) or later
- cisco ip_phone_7821_firmware14.3\(1\) or later
- cisco ip_phone_7841_firmware14.3\(1\) or later
- cisco ip_phone_7861_firmware14.3\(1\) or later
- cisco ip_phone_8811_firmware14.3\(1\) or later
- cisco ip_phone_8832_firmware14.3\(1\) or later
- cisco ip_phone_8841_firmware14.3\(1\) or later
- cisco ip_phone_8845_firmware14.3\(1\) or later
- cisco ip_phone_8851_firmware14.3\(1\) or later
- cisco ip_phone_8861_firmware14.3\(1\) or later
- cisco ip_phone_8821_firmware11.0\(1\) or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco desk_phone_9871_firmware | 3.0\(1\) ≤ v ≤ 3.2\(1\) | — |
| cisco desk_phone_9841_firmware | 3.0\(1\) ≤ v ≤ 3.2\(1\) | — |
| cisco desk_phone_9851_firmware | 3.0\(1\) ≤ v ≤ 3.2\(1\) | — |
| cisco desk_phone_9861_firmware | 3.0\(1\) ≤ v ≤ 3.2\(1\) | — |
| cisco ip_phone_8865_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_7811_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_7821_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_7841_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_7861_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_8811_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_8832_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_8841_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_8845_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_8851_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_8861_firmware | v < 14.3\(1\), 14.3\(1\) | 14.3\(1\) |
| cisco ip_phone_8821_firmware | v < 11.0\(1\), 11.0\(0.7\), 11.0\(1\), 11.0\(2\), 11.0\(3\), 11.0\(4\), 11.0\(5\), 11.0\(6\) | 11.0\(1\) |
| cisco video_phone_8875_firmware | v < 2.3\(1\), 3.0\(1\) ≤ v ≤ 3.2\(1\), 2.3\(1\) | 2.3\(1\) |
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