# 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.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Feb 2026
- **Updated:** 12 Feb 2026
- **Also known as:** GHSA-mp3x-9r34-2hx4

## 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 (Improper Validation of Specified Type of Input)

## 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.

## Is CVE-2026-20119 being exploited?

There is no known exploitation of CVE-2026-20119 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20119 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-20119 in the wild and no public exploit code.

Affected product: Cisco RoomOS Software. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-20119/ (Markdown: https://insights.sbomify.com/CVE-2026-20119/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20119
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20119
- OSV: https://osv.dev/vulnerability/CVE-2026-20119

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20119/
Summaries are generated and may contain mistakes; the official description above is the record.