---
id: CVE-2022-20931
title: Cisco Touch 10 Device Downgrade Attack Vulnerability
summary: "A vulnerability in the version control of Cisco TelePresence CE Software for Cisco Touch 10 Devices could allow an unauthenticated, adjacent attacker to install an older version of the software on an affected device.\r\n\r\nThis vulnerability …"
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cvssSource: vendor
vendor: Cisco
product: Cisco TelePresence Endpoint Software (TC/CE)
affected:
  - telepresence_endpoint_software_tc_ce
published: '2022-10-05'
updated: '2022-10-05'
sourceUpdated: '2022-10-05T16:00:00+00:00'
source: CSAF
sourceUrl: >-
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-CTT-DAV-HSvEHHEt
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-CTT-DAV-HSvEHHEt
  - url: 'https://software.cisco.com'
tags:
  - csaf
  - vendor-advisory
  - cisco
epss: 0.00273
epssPercentile: 0.17498
ingestedAt: '2026-09-08T15:58:18.537Z'
---

## Overview

A vulnerability in the version control of Cisco TelePresence CE Software for Cisco Touch 10 Devices could allow an unauthenticated, adjacent attacker to install an older version of the software on an affected device.

This vulnerability is due to insufficient version control. An attacker could exploit this vulnerability by installing an older version of Cisco TelePresence CE Software on an affected device. A successful exploit could allow the attacker to take advantage of vulnerabilities in older versions of the software.

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

## Vendor advisories

- **cisco-sa-CTT-DAV-HSvEHHEt** · Cisco · affected: Cisco TelePresence Endpoint Software (TC/CE) · updated 2022-10-05 · [advisory](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-CTT-DAV-HSvEHHEt)

**Cisco Touch 10 Devices Downgrade Vulnerability**. Released 2022-10-05.

Affected:

- Cisco TelePresence Endpoint Software (TC/CE)

## Remediation

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