CVE-2026-20119 Cisco TelePresence Collaboration Endpoint Software and RoomOS Software Denial of Service Vulnerability
Unauthenticated remote attackers can cause denial of service on Cisco TelePresence and RoomOS devices by sending crafted text inputs.
- 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-2026-20119?
CVE-2026-20119 is a high-severity denial of service vulnerability in Cisco RoomOS Software, published on 4 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the text rendering subsystem 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 validation of input received by an affected device. An attacker could exploit this vulnerability by getting the affected device to render crafted text, for example, a crafted meeting invitation. As indicated in the CVSS score, no user interaction is required, such as accepting the meeting invitation. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Weakness: CWE-1287
Which versions are affected by CVE-2026-20119?
How do I fix CVE-2026-20119?
No fix has been published for CVE-2026-20119 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-2026-20119 being exploited?
There is no known exploitation of CVE-2026-20119 in the wild and no public exploit code.
Sources
Also known as GHSA-mp3x-9r34-2hx4.