November 3, 2021 · Applied Cybernetics Group
CVE-2020-3161 — Cisco Cisco IP Phones
Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability
- Added to KEV
2021-11-03- Federal due date
2022-05-03- Vendor
- Cisco
- Product
- Cisco IP Phones
- EPSS
- 99.5th percentile (score 0.871, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2020-3161
CISA short description
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.