CVE-2019-6550

Name: CVE-2019-6550
Creator: NVD / NIST
Published: 2019-04-05T19:29:00.31+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 6.09%

Last modified Jun 17, 2026

CVE-2019-6550 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Advantech WebAccess/SCADA, Versions 8.3.5 and prior. Multiple stack-based buffer overflow vulnerabilities, caused by a lack of proper validation of the length of user-supplied data, may allow remote code execution.. EPSS estimates a 6.09% chance of exploitation in the next 30 days.

Description

Advantech WebAccess/SCADA, Versions 8.3.5 and prior. Multiple stack-based buffer overflow vulnerabilities, caused by a lack of proper validation of the length of user-supplied data, may allow remote code execution.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

6.09%

92.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Advantech	Webaccess	<= 8.3.5

References

https://ics-cert.us-cert.gov/advisories/ICSA-19-092-01Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-19-585/Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-092-01Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-19-585/Third Party Advisory, VDB Entry

Timeline

Published: Apr 5, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6550?

How severe is CVE-2019-6550?

CVE-2019-6550 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 6.09% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6550?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6550?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST