Vulnerability Database

313,825

Total vulnerabilities in the database

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: Oct 15, 2025
  • Updated: Nov 17, 2025
  • CVE: CVE-2025-20350
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
cisco / desk_phone_9871_firmware 3.0\(1\) 3.2\(1\).x
cisco / desk_phone_9841_firmware 3.0\(1\) 3.2\(1\).x
cisco / desk_phone_9851_firmware 3.0\(1\) 3.2\(1\).x
cisco / desk_phone_9861_firmware 3.0\(1\) 3.2\(1\).x
cisco / ip_phone_8865_firmware - 14.3\(1\)
cisco / ip_phone_8865_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_8865_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_7811_firmware - 14.3\(1\)
cisco / ip_phone_7811_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_7811_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_7821_firmware - 14.3\(1\)
cisco / ip_phone_7821_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_7821_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_7841_firmware - 14.3\(1\)
cisco / ip_phone_7841_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_7841_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_7861_firmware - 14.3\(1\)
cisco / ip_phone_7861_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_7861_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_8811_firmware - 14.3\(1\)
cisco / ip_phone_8811_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_8811_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_8832_firmware - 14.3\(1\)
cisco / ip_phone_8832_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_8832_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_8841_firmware - 14.3\(1\)
cisco / ip_phone_8841_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_8841_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_8845_firmware - 14.3\(1\)
cisco / ip_phone_8845_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_8845_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_8851_firmware - 14.3\(1\)
cisco / ip_phone_8851_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_8851_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / ip_phone_8861_firmware - 14.3\(1\)
cisco / ip_phone_8861_firmware 14.3(1) 14.3(1).x
cisco / ip_phone_8861_firmware 14.3(1)-sr1 14.3(1)-sr1.x
cisco / video_phone_8875_firmware - 2.3\(1\)
cisco / video_phone_8875_firmware 3.0\(1\) 3.2\(1\).x
cisco / video_phone_8875_firmware 2.3(1) 2.3(1).x
cisco / video_phone_8875_firmware 2.3(1)-sr1 2.3(1)-sr1.x
cisco / ip_phone_8821_firmware - 11.0\(1\)
cisco / ip_phone_8821_firmware 11.0(0.7)-mpp 11.0(0.7)-mpp.x
cisco / ip_phone_8821_firmware 11.0(1) 11.0(1).x
cisco / ip_phone_8821_firmware 11.0(2) 11.0(2).x
cisco / ip_phone_8821_firmware 11.0(2)-sr1 11.0(2)-sr1.x
cisco / ip_phone_8821_firmware 11.0(2)-sr2 11.0(2)-sr2.x
cisco / ip_phone_8821_firmware 11.0(3) 11.0(3).x
cisco / ip_phone_8821_firmware 11.0(3)-sr1 11.0(3)-sr1.x
cisco / ip_phone_8821_firmware 11.0(3)-sr2 11.0(3)-sr2.x
cisco / ip_phone_8821_firmware 11.0(3)-sr3 11.0(3)-sr3.x
cisco / ip_phone_8821_firmware 11.0(3)-sr4 11.0(3)-sr4.x
cisco / ip_phone_8821_firmware 11.0(3)-sr5 11.0(3)-sr5.x
cisco / ip_phone_8821_firmware 11.0(3)-sr6 11.0(3)-sr6.x
cisco / ip_phone_8821_firmware 11.0(4) 11.0(4).x
cisco / ip_phone_8821_firmware 11.0(4)-sr1 11.0(4)-sr1.x
cisco / ip_phone_8821_firmware 11.0(4)-sr2 11.0(4)-sr2.x
cisco / ip_phone_8821_firmware 11.0(4)-sr3 11.0(4)-sr3.x
cisco / ip_phone_8821_firmware 11.0(5) 11.0(5).x
cisco / ip_phone_8821_firmware 11.0(5)-sr1 11.0(5)-sr1.x
cisco / ip_phone_8821_firmware 11.0(5)-sr2 11.0(5)-sr2.x
cisco / ip_phone_8821_firmware 11.0(5)-sr3 11.0(5)-sr3.x
cisco / ip_phone_8821_firmware 11.0(6) 11.0(6).x
cisco / ip_phone_8821_firmware 11.0(6)-sr1 11.0(6)-sr1.x
cisco / ip_phone_8821_firmware 11.0(6)-sr2 11.0(6)-sr2.x
cisco / ip_phone_8821_firmware 11.0(6)-sr4 11.0(6)-sr4.x
cisco / ip_phone_8821_firmware 11.0(6)-sr5 11.0(6)-sr5.x
cisco / ip_phone_8821_firmware 11.0(6)-sr6 11.0(6)-sr6.x