---
id: CVE-2022-20783
title: Cisco Telepresence CE and RoomOS Software Denial of Service Vulnerability
summary: >-
  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 …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
vendor: Cisco
product: Cisco TelePresence Endpoint Software (TC/CE)
affected:
  - telepresence_endpoint_software_tc_ce
  - roomos_software
published: '2022-04-20'
updated: '2022-04-20'
sourceUpdated: '2022-04-20T16:00:00+00:00'
source: CSAF
sourceUrl: >-
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ce-roomos-dos-c65x2Qf2
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ce-roomos-dos-c65x2Qf2
  - url: 'https://software.cisco.com'
tags:
  - csaf
  - vendor-advisory
  - cisco
epss: 0.01428
epssPercentile: 0.7186
ingestedAt: '2026-09-08T15:58:18.538Z'
---

## Overview

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.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

## Vendor advisories

- **cisco-sa-ce-roomos-dos-c65x2Qf2** · Cisco · affected: Cisco TelePresence Endpoint Software (TC/CE), Cisco RoomOS Software · updated 2022-04-20 · [advisory](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ce-roomos-dos-c65x2Qf2)

**Cisco TelePresence Collaboration Endpoint and RoomOS Software H.323 Denial of Service Vulnerability**. Released 2022-04-20.

Affected:

- Cisco TelePresence Endpoint Software (TC/CE)
- Cisco RoomOS Software

## Remediation

Cisco has released software updates that address this vulnerability. https://software.cisco.com