CVE-2022-20783: Cisco TelePresence Collaboration Endpoint and RoomOS Software H.323 Denial of Service Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-04-21 · updated 2026-06-17
Weakness: CWE-1287

Description

A vulnerability in the packet processing functionality of Cisco TelePresence Collaboration Endpoint (CE) Software and Cisco RoomOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted H.323 traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to either reboot normally or reboot into maintenance mode, which could result in a DoS condition on the device.

Affected products

Cisco Roomos: before 2022 — fixed in 2022
Cisco TelePresence Endpoint Software (TC/CE): before 9.15.10.8; from 10.0.0.0 before 10.11.2.2 — fixed in 10.11.2.2, 9.15.10.8

How to fix

Upgrade to a fixed version: Cisco Roomos 2022; Cisco TelePresence Endpoint Software (TC/CE) 10.11.2.2, 9.15.10.8. Check the vendor advisory for mitigations.

References

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