CVE-2022-20783 Cisco TelePresence Collaboration Endpoint and RoomOS Software H.323 Denial of Service Vulnerability
Unauthenticated remote attackers can cause denial of service on Cisco TelePresence devices by sending crafted H.323 traffic, triggering reboots.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-20783?
CVE-2022-20783 is a high-severity denial of service vulnerability in Cisco RoomOS Software, published on 21 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2022-20783?
It affects 2 products.
Products include Cisco Roomos, Cisco Telepresence Collaboration Endpoint.
How do I fix CVE-2022-20783?
No fix has been published for CVE-2022-20783 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-20783 being exploited?
There is no known exploitation of CVE-2022-20783 in the wild and no public exploit code.
Other vulnerabilities in Cisco RoomOS Software
- CVE-2026-20150 Cisco RoomOS Security Hardening Release - Access Control Vulnerabilities
- CVE-2019-15288 Cisco TelePresence Collaboration Endpoint, TelePresence Codec, and RoomOS Software Privilege Escalation Vulnerability
- CVE-2026-20156 Cisco RoomOS Security Hardening Release - Buffer Management Vulnerabilities
- CVE-2026-20153 Cisco RoomOS Security Hardening Release - Input Validation Vulnerabilities
- CVE-2026-20157 Cisco RoomOS Security Hardening Release - Missing Encryption Vulnerabilities
Sources
Also known as GHSA-64rj-w9x6-322q.