SB20260819135 - Buffer overflow in Cisco RoomOS
Published: August 19, 2026
Security Bulletin ID
SB20260819135
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2026-20302)
CWE-ID: CWE-120 - Buffer overflow
CVSSv4: 6.8 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows an attacker with physical access to execute arbitrary code.
The vulnerability exists due to improper bounds checking in the USB driver when processing data from a connected USB device. An attacker with physical access can connect a malicious USB device to execute arbitrary code.
Successful exploitation could lead to code execution with root privileges.
Remediation
Install update from vendor's website.