How severe is CVE-2019-16900?

CVE-2019-16900 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-16900 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16900?

CVE-2019-16900 affects Advantech Webaccess/hmi Designer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-16900?

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

When was CVE-2019-16900 published?

CVE-2019-16900 was published on 2019-09-26 and last updated on 2026-06-17.

CVE-2019-16900

CVE-2019-16900 is a high-severity vulnerability in Advantech Webaccess/hmi Designer with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Advantech Webaccess/hmi Designer
Published: 2019-09-26
Last modified: 2026-06-17

Description

Advantech WebAccess/HMI Designer 2.1.9.31 has a User Mode Write AV starting at MSVCR90!memcpy+0x000000000000015c.

Frequently asked questions

What is CVE-2019-16900?: Advantech WebAccess/HMI Designer 2.1.9.31 has a User Mode Write AV starting at MSVCR90!memcpy+0x000000000000015c.
How severe is CVE-2019-16900?: CVE-2019-16900 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-16900 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16900?: CVE-2019-16900 affects Advantech Webaccess/hmi Designer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-16900?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-16900 published?: CVE-2019-16900 was published on 2019-09-26 and last updated on 2026-06-17.

References

http://code610.blogspot.com/2019/09/crashing-webaccesshmi-designer-21931.html

Affected products (1)

cpe:2.3:a:advantech:webaccess\/hmi_designer:2.1.9.31:*:*:*:*:*:*:*

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