CVE-2025-20351
MEDIUM EPSS 17.5%
Published Oct 15, 20258mo ago · Modified Jun 17, 20261w ago
6.1 CVSS 3.1
Published Oct 15, 2025 8mo ago
Last Modified Jun 17, 2026 1w ago
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
17.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-79 Cross-site Scripting Injection
Affected Products 85
| Vendor | Product | Version | Range |
|---|---|---|---|
| cisco | desk_phone_9871_firmware | * | ≥3.0\(1\) – ≤3.2\(1\) |
| cisco | desk_phone_9871 | * | any |
| cisco | desk_phone_9841_firmware | * | ≥3.0\(1\) – ≤3.2\(1\) |
| cisco | desk_phone_9841 | * | any |
| cisco | desk_phone_9851_firmware | * | ≥3.0\(1\) – ≤3.2\(1\) |
| cisco | desk_phone_9851 | * | any |
| cisco | desk_phone_9861_firmware | * | ≥3.0\(1\) – ≤3.2\(1\) |
| cisco | desk_phone_9861 | * | any |
| cisco | ip_phone_8865_firmware | * | <14.3\(1\) |
| cisco | ip_phone_8865_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8865_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8865 | * | any |
| cisco | ip_phone_7811_firmware | * | <14.3\(1\) |
| cisco | ip_phone_7811_firmware | 14.3\(1\) | any |
| cisco | ip_phone_7811_firmware | 14.3\(1\) | any |
| cisco | ip_phone_7811 | * | any |
| cisco | ip_phone_7821_firmware | * | <14.3\(1\) |
| cisco | ip_phone_7821_firmware | 14.3\(1\) | any |
| cisco | ip_phone_7821_firmware | 14.3\(1\) | any |
| cisco | ip_phone_7821 | * | any |
| cisco | ip_phone_7841_firmware | * | <14.3\(1\) |
| cisco | ip_phone_7841_firmware | 14.3\(1\) | any |
| cisco | ip_phone_7841_firmware | 14.3\(1\) | any |
| cisco | ip_phone_7841 | * | any |
| cisco | ip_phone_7861_firmware | * | <14.3\(1\) |
| cisco | ip_phone_7861_firmware | 14.3\(1\) | any |
| cisco | ip_phone_7861_firmware | 14.3\(1\) | any |
| cisco | ip_phone_7861 | * | any |
| cisco | ip_phone_8811_firmware | * | <14.3\(1\) |
| cisco | ip_phone_8811_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8811_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8811 | * | any |
| cisco | ip_phone_8832_firmware | * | <14.3\(1\) |
| cisco | ip_phone_8832_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8832_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8832 | * | any |
| cisco | ip_phone_8841_firmware | * | <14.3\(1\) |
| cisco | ip_phone_8841_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8841_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8841 | * | any |
| cisco | ip_phone_8845_firmware | * | <14.3\(1\) |
| cisco | ip_phone_8845_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8845_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8845 | * | any |
| cisco | ip_phone_8851_firmware | * | <14.3\(1\) |
| cisco | ip_phone_8851_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8851_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8851 | * | any |
| cisco | ip_phone_8861_firmware | * | <14.3\(1\) |
| cisco | ip_phone_8861_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8861_firmware | 14.3\(1\) | any |
| cisco | ip_phone_8861 | * | any |
| cisco | ip_phone_8821_firmware | * | <11.0\(1\) |
| cisco | ip_phone_8821_firmware | 11.0\(0.7\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(1\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(2\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(2\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(2\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(3\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(3\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(3\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(3\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(3\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(3\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(3\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(4\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(4\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(4\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(4\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(5\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(5\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(5\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(5\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(6\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(6\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(6\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(6\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(6\) | any |
| cisco | ip_phone_8821_firmware | 11.0\(6\) | any |
| cisco | ip_phone_8821 | * | any |
| cisco | video_phone_8875_firmware | * | <2.3\(1\) |
| cisco | video_phone_8875_firmware | * | ≥3.0\(1\) – ≤3.2\(1\) |
| cisco | video_phone_8875_firmware | 2.3\(1\) | any |
| cisco | video_phone_8875_firmware | 2.3\(1\) | any |
| cisco | video_phone_8875 | * | any |
References 1
- sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-phone-dos-FPyjLV7A
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.