CVE-2020-3161
Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability
What is affected
| Vendor | Cisco |
|---|---|
| Product | Cisco IP Phones |
| Weakness | CWE-20 |
The vulnerability
Cisco IP Phones contain an improper input validation vulnerability for HTTP requests. Exploitation could allow an attacker to execute code remotely with root privileges or cause a denial-of-service (DoS) condition.
Required action
Apply updates per vendor instructions.
US federal civilian agencies were required to act by 3 May 2022 under BOD 22-01. The deadline is a compliance date, not a measure of severity — it says nothing about how dangerous the flaw is to anyone else.
Where this comes from
Every field on this page is taken from the CISA Known Exploited Vulnerabilities catalog, last synced 13 Nov 2026, 00:30. Nothing here is our own assessment. For the technical scoring, see the NVD record below.
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