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CVE-2020-3161: Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability
Cisco Cisco IP Phones · in CISA KEV since 2021-11-03
2021-11-03added to KEV
2022-05-03federal remediation due date
83.86%EPSS exploit probability (30 days) 99.7th percentile
9.8 CRITICALCVSS 3.1
Unknownknown ransomware use
567days from NVD publication to KEV
What it is
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 (CISA)
Apply updates per vendor instructions.
| CWE | CWE-20 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2020-04-15 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2020-3161.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.