Quick answers
- Is CVE-2026-20302 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-20302 being exploited in the wild.
- How severe is CVE-2026-20302?
- Medium severity, with a CVSS score of 6.1, published 19 August 2026.
- Which products and versions are affected?
- Cisco RoomOS 11 and earlier, 26 before 26.7.2.2 (on-premises) or 26.7.1.12 (cloud-aware).
- Is there a fix for CVE-2026-20302?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-20302 attacked?
- It is attacked with physical access, in a network appliance.
- Am I affected by CVE-2026-20302?
- Check whether you run Cisco RoomOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This is a buffer overflow vulnerability (CWE-120) in the USB driver of Cisco RoomOS caused by insufficient boundary checks on data passed through the USB interface. The vulnerability requires an attacker to have physical access to connect a malicious USB device; no authentication or network access is required. A successful exploit allows an unauthenticated local attacker to trigger a stack overflow and execute arbitrary code with root privileges. Cisco has released fixed software: RoomOS 11.32.7.0 or later for on-premises deployments, and 11.40.1.1 or later for cloud-aware deployments; version 26 users should upgrade to 26.7.2.2 or 26.7.1.12.
Affected products
- Cisco RoomOS 11 and earlier, 26 before 26.7.2.2 (on-premises) or 26.7.1.12 (cloud-aware)
Timeline
- 2026-08-19: disclosed