CVE-2020-3336: Cisco TelePresence Collaboration Endpoint and RoomOS Software Command Injection Vulnerability

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-06-18 · updated 2026-06-17
Weakness: CWE-78

Description

A vulnerability in the software upgrade process of Cisco TelePresence Collaboration Endpoint Software and Cisco RoomOS Software could allow an authenticated, remote attacker to modify the filesystem to cause a denial of service (DoS) or gain privileged access to the root filesystem. The vulnerability is due to insufficient input validation. An attacker with administrative privileges could exploit this vulnerability by sending requests with malformed parameters to the system using the console, Secure Shell (SSH), or web API. A successful exploit could allow the attacker to modify the device configuration or cause a DoS.

Affected products

Cisco Roomos: all versions
Cisco TelePresence Endpoint Software (TC/CE): before 9.9.4; from 9.10.0 through 9.10.2; from 9.12.0 through 9.12.3 — fixed in 9.9.4

How to fix

Upgrade to a fixed version: Cisco TelePresence Endpoint Software (TC/CE) 9.9.4. Check the vendor advisory for mitigations.

References

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