CVE-2026-20302
Cisco RoomOS Stack Overflow Vulnerability
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability in the USB driver of Cisco RoomOS could allow an unauthenticated, local attacker with physical access to the USB port on an affected device to execute arbitrary code with root privileges. This vulnerability is due to insufficient boundary checks for specific data that is provided through the USB driver. An attacker could exploit this vulnerability by connecting a malicious USB device to an affected device. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected system and execute arbitrary code with root privileges.
| CWE | CWE-120 |
| Vendor | cisco |
| Product | cisco roomos software |
| Ecosystems | |
| Industries | NetworkingTelecommunications |
| Published | Aug 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Cisco / Cisco RoomOS Software
RoomOS 10.11.2.2 RoomOS 10.15.2.2 RoomOS 11.5.4.6 RoomOS 11.5.2.4 RoomOS 10.8.2.5 RoomOS 10.11.5.2 RoomOS 10.11.3.0 RoomOS 10.15.5.3 RoomOS 10.19.2.2 RoomOS 11.1.3.1 RoomOS 10.11.6.0 RoomOS 10.19.3.0 RoomOS 10.19.4.2 RoomOS 10.3.2.4 RoomOS 10.3.4.0 RoomOS 10.15.3.0 RoomOS 11.1.4.1 RoomOS 11.14.2.3 RoomOS 11.1.2.4 RoomOS 10.8.3.1 RoomOS 11.14.2.1 RoomOS 10.3.3.0 RoomOS 10.8.4.0 RoomOS 10.15.4.1 RoomOS 10.19.5.6 RoomOS 10.11.4.1 RoomOS 11.9.3.1 RoomOS 11.5.3.3 RoomOS 10.3.2.0 RoomOS 11.9.2.4 RoomOS 11.14.3.0 RoomOS 11.17.2.2 RoomOS 11.14.4.0 RoomOS 10.19 StepUpg RoomOS 11.17.3.0 RoomOS 11.20.2.3 RoomOS 11.14.5.0 RoomOS 11.17.4.0 RoomOS 11.20.3.0 RoomOS 11.23.1.6 RoomOS 11.23.1.8 RoomOS 11.24.1.5 RoomOS 11.24.2.4 RoomOS 11.24.3.0 RoomOS 11.24.4.1 RoomOS 11.27.2.0 RoomOS 11.28.1.3 RoomOS 11.27.3.0 RoomOS 11.31.1.5 RoomOS 11.27.4.0 RoomOS 11.32.2.1 RoomOS 11.33.1.7 RoomOS 26.0.1.2 RoomOS 11.34.1.2 RoomOS 11.32.3.0 RoomOS 11.27.5.0 RoomOS 11.32.4.0 RoomOS 26.1.1.5 RoomOS 11.35.1.2 RoomOS 26.2.2.2 RoomOS 11.32.5.1 RoomOS 26.4.1.6 RoomOS 26.4.1.4 RoomOS 26.3.1.3 RoomOS 11.36.1.1 RoomOS 11.37.1.0 RoomOS 26.5.2.0 RoomOS 26.5.2.2 RoomOS 26.6.1.4 RoomOS 11.38.1.1 RoomOS 11.32.6.0 RoomOS 11.39.1.1