Critical severity9.8CISA KEVNVD Advisory· Published Apr 15, 2020· Updated Jun 17, 2026
CVE-2020-3161
CVE-2020-3161
Description
A vulnerability in the web server for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web server of a targeted device. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a DoS condition.
AI Insight
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Affected products
33cpe:2.3:o:cisco:8831_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:8831_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:8831_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:8831_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_7811_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_7821_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_7841_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_7861_firmware:11.0\(1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8811_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:ip_phone_8811_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8811_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8811_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8821-ex_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:ip_phone_8821-ex_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8821-ex_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8821-ex_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8821_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:ip_phone_8821_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8821_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8841_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:ip_phone_8841_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8841_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8841_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8845_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:ip_phone_8845_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8845_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8845_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8851_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:ip_phone_8851_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8851_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8851_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8861_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:ip_phone_8861_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8861_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8861_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_8865_firmware:10.3\(1\)es14:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:cisco:ip_phone_8865_firmware:10.3\(1\)es14:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8865_firmware:11.0\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ip_phone_8865_firmware:11.0\(5\)sr1:*:*:*:*:*:*:*
(expand)+ 1 more
- (no CPE)
- (no CPE)range: n/a
Patches
Vulnerability mechanics
References
3- packetstormsecurity.com/files/157265/Cisco-IP-Phone-11.7-Denial-Of-Service.htmlnvdExploitThird Party AdvisoryVDB Entry
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voip-phones-rce-dos-rB6EeRXsnvdVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
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