What’s Vulnerable › Vulnerabilities

CVE-2019-18826

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-16 · updated 2026-06-17
• Weakness: CWE-295

Description

Barco ClickShare Button R9861500D01 devices before 1.9.0 have Improper Following of a Certificate's Chain of Trust. The embedded 'dongle_bridge' program used to expose the functionalities of the ClickShare Button to a USB host, does not properly validate the whole certificate chain.

Affected products

• Barco Clickshare Cs-100 Firmware: before 1.9.0 — fixed in 1.9.0
• Barco Clickshare Cse-200+ Firmware: before 1.9.0 — fixed in 1.9.0
• Barco Clickshare Cse-200 Firmware: before 1.9.0 — fixed in 1.9.0
• Barco Clickshare Cse-800 Firmware: before 1.9.0 — fixed in 1.9.0

How to fix

Upgrade to a fixed version: Barco Clickshare Cs-100 Firmware 1.9.0; Barco Clickshare Cse-200+ Firmware 1.9.0; Barco Clickshare Cse-200 Firmware 1.9.0; Barco Clickshare Cse-800 Firmware 1.9.0. Check the vendor advisory for mitigations.

References

• https://www.barco.com/en/clickshare/firmware-update
• https://www.barco.com/en/clickshare/firmware-update

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