Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2025-20350

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 cause a DoS condition on an affected device. This vulnerability is due to a buffer overflow when an affected device processes HTTP packets. An attacker could exploit this vulnerability by sending crafted HTTP input to the device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. 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.

Published

2025-10-15T17:15:48.880

Last Modified

2025-12-04T21:29:46.177

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-121
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco desk_phone_9871_firmware ≤ 3.2\(1\) Yes
Hardware cisco desk_phone_9871 - No
Operating System cisco desk_phone_9841_firmware ≤ 3.2\(1\) Yes
Hardware cisco desk_phone_9841 - No
Operating System cisco desk_phone_9851_firmware ≤ 3.2\(1\) Yes
Hardware cisco desk_phone_9851 - No
Operating System cisco desk_phone_9861_firmware ≤ 3.2\(1\) Yes
Hardware cisco desk_phone_9861 - No
Operating System cisco ip_phone_8865_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_8865_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_8865_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_8865 - No
Operating System cisco ip_phone_7811_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_7811_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_7811_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_7811 - No
Operating System cisco ip_phone_7821_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_7821_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_7821_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_7821 - No
Operating System cisco ip_phone_7841_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_7841_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_7841_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_7841 - No
Operating System cisco ip_phone_7861_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_7861_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_7861_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_7861 - No
Operating System cisco ip_phone_8811_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_8811_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_8811_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_8811 - No
Operating System cisco ip_phone_8832_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_8832_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_8832_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_8832 - No
Operating System cisco ip_phone_8841_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_8841_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_8841_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_8841 - No
Operating System cisco ip_phone_8845_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_8845_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_8845_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_8845 - No
Operating System cisco ip_phone_8851_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_8851_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_8851_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_8851 - No
Operating System cisco ip_phone_8861_firmware < 14.3\(1\) Yes
Operating System cisco ip_phone_8861_firmware 14.3\(1\) Yes
Operating System cisco ip_phone_8861_firmware 14.3\(1\) Yes
Hardware cisco ip_phone_8861 - No
Operating System cisco video_phone_8875_firmware < 2.3\(1\) Yes
Operating System cisco video_phone_8875_firmware ≤ 3.2\(1\) Yes
Operating System cisco video_phone_8875_firmware 2.3\(1\) Yes
Operating System cisco video_phone_8875_firmware 2.3\(1\) Yes
Hardware cisco video_phone_8875 - No
Operating System cisco ip_phone_8821_firmware < 11.0\(1\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(0.7\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(1\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(2\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(2\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(2\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(3\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(3\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(3\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(3\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(3\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(3\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(3\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(4\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(4\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(4\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(4\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(5\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(5\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(5\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(5\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(6\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(6\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(6\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(6\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(6\) Yes
Operating System cisco ip_phone_8821_firmware 11.0\(6\) Yes
Hardware cisco ip_phone_8821 - No
References