CVE-2024-53919 Overview
CVE-2024-53919 is a command injection vulnerability affecting Barco ClickShare wireless presentation devices. The flaw exists in the device webUI and allows physically proximate attackers or local administrators to trigger operating system command execution as root. Affected devices run firmware versions prior to 2.21.1 and include the ClickShare CX-30, CX-20, C-5, C-10, and ClickShare Bar Pro and Core models. The vulnerability is categorized under CWE-77: Improper Neutralization of Special Elements used in a Command and results in full compromise of the device with confidentiality, integrity, and availability impact.
Critical Impact
Successful exploitation grants root-level OS command execution on ClickShare meeting-room devices, enabling persistent implantation, network pivoting, and interception of presentation content.
Affected Products
- Barco ClickShare CX-30 and CX-20 running firmware before 2.21.1
- Barco ClickShare C-5 and C-10 running firmware before 2.21.1
- Barco ClickShare Bar Pro and Bar Core running firmware before 2.21.1
Discovery Timeline
- 2024-12-10 - CVE-2024-53919 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-53919
Vulnerability Analysis
The vulnerability resides in the ClickShare device webUI, which accepts input that is passed to underlying operating system commands without proper neutralization. An attacker with physical proximity to the device, or a local administrator with webUI access, can inject shell metacharacters into a vulnerable parameter. The injected payload executes with root privileges on the embedded Linux platform powering the ClickShare appliance.
Because ClickShare units operate in conference rooms and often bridge corporate wired and guest wireless networks, a compromised device provides a foothold well beyond the appliance itself. Attackers can capture screen content, tamper with firmware, or use the device as a pivot into internal networks. The scope change reflected in the CVSS vector indicates that impact extends beyond the vulnerable component's security boundary.
Root Cause
The root cause is improper neutralization of special elements used in an OS command [CWE-77]. Input received through the administrative webUI is concatenated into shell command strings without sanitization or use of parameterized execution APIs. As a result, characters such as ;, |, &, and backticks break out of the intended command context.
Attack Vector
Exploitation requires physical proximity to the device, or authenticated access to the webUI as a local administrator. There is no user interaction requirement beyond the attacker's own actions. Once an attacker reaches the vulnerable webUI parameter, crafted input triggers command execution as root. Refer to the Barco Knowledge Base Article for vendor-provided technical details.
No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Detection Methods for CVE-2024-53919
Indicators of Compromise
- Unexpected outbound network connections originating from ClickShare device IP addresses to non-Barco infrastructure
- Firmware version reporting below 2.21.1 on managed ClickShare units
- Unauthorized configuration changes or new administrator accounts appearing in the ClickShare webUI audit log
- Anomalous DNS queries or lateral movement attempts sourced from meeting-room device VLANs
Detection Strategies
- Inventory all ClickShare CX-30/20, C-5/10, and Bar Pro/Core devices and verify firmware against the fixed version 2.21.1
- Review webUI access logs for administrative logins from unexpected sources or at unusual hours
- Monitor network traffic from ClickShare device segments for command-and-control patterns or protocol anomalies
Monitoring Recommendations
- Ingest network telemetry from meeting-room VLANs into a centralized analytics platform to baseline normal ClickShare traffic
- Alert on any ClickShare device initiating shell-like or scripting-tool traffic that deviates from the vendor's expected communication profile
- Track firmware version drift across the ClickShare fleet and flag devices that fall behind the patched release
How to Mitigate CVE-2024-53919
Immediate Actions Required
- Upgrade all affected ClickShare devices to firmware version 2.21.1 or later
- Restrict physical access to ClickShare Base Units and disable unused physical ports
- Limit webUI administrative access to a dedicated management network and enforce strong, unique administrator credentials
- Segment ClickShare devices onto an isolated VLAN with strict egress filtering to reduce blast radius if a device is compromised
Patch Information
Barco has released firmware version 2.21.1, which remediates CVE-2024-53919. Consult the Barco Knowledge Base Article for downloads and model-specific upgrade guidance. Apply the update through the ClickShare management console or the device webUI.
Workarounds
- Disable or firewall the ClickShare webUI from all networks except a trusted management subnet until patching is complete
- Rotate ClickShare administrator credentials and disable any default or shared accounts
- Physically secure Base Units in locked enclosures where feasible to reduce the physically proximate attack surface
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
