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Vulnerability Intelligence Report
Cisco IP Phones Web Server Remote Code Execution and Denial of Service Vulnerability

CVE-2020-3161

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.

CISA KEV SSVC: Active Exploitation Automatable
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:83.73%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
Authentication
Weaponization
SSVC Action

Weaknesses (CWE)

Affected Products & Versions

Vendor Product Affected Versions
Cisco Cisco IP phone n/a (affected)

References & Technical Advisories

No reference links found.

Threat Intelligence Signals

CISA KEV
ACTIVE IN CATALOG
EPSS Score
83.734%

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityCisco Systems, Inc. · Hosted Service · USA
Reserved2019-12-12T00:00:00
Published2020-04-15T20:10:11
Patch Date2020-04-15
Last Updated2025-10-21T23:35:45

LINK COPIED TO CLIPBOARD