How severe is CVE-2019-18826?

CVE-2019-18826 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-18826 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18826?

CVE-2019-18826 primarily affects Barco Clickshare Cs-100 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-18826?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-18826 published?

CVE-2019-18826 was published on 2019-12-16 and last updated on 2026-06-17.

CVE-2019-18826

CVE-2019-18826 is a critical-severity vulnerability in Barco Clickshare Cs-100 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Barco Clickshare Cs-100 Firmware
Published: 2019-12-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-18826?: 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.
How severe is CVE-2019-18826?: CVE-2019-18826 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-18826 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18826?: CVE-2019-18826 primarily affects Barco Clickshare Cs-100 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-18826?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-18826 published?: CVE-2019-18826 was published on 2019-12-16 and last updated on 2026-06-17.

References

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

Affected products (4)

cpe:2.3:o:barco:clickshare_cs-100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:barco:clickshare_cse-200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:barco:clickshare_cse-200\+_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:barco:clickshare_cse-800_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Barco Clickshare Cs-100 Firmware

CVE-2019-18830 — Critical (CVSS 9.8): Barco ClickShare Button R9861500D01 devices before 1.9.0 allow OS Command Injection. The embedded 'dongle_bridge'…
CVE-2018-10943 — High (CVSS 7.5): An issue was discovered on Barco ClickShare CSE-200 and CS-100 Base Units with firmware before 1.6.0.3. Sending an…
CVE-2019-18828 — Medium (CVSS 6.8): Barco ClickShare Button R9861500D01 devices before 1.9.0 have Insufficiently Protected Credentials. The root account…
CVE-2019-18827 — Medium (CVSS 5.9): On Barco ClickShare Button R9861500D01 devices (before firmware version 1.9.0) JTAG access is disabled after ROM code…
CVE-2019-18831 — Medium (CVSS 5.3): Barco ClickShare Button R9861500D01 devices before 1.9.0 allow Information Exposure. The encrypted ClickShare Button…

All CVEs affecting Barco Clickshare Cs-100 Firmware →

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