CVE-2020-10638

Name: CVE-2020-10638
Creator: NVD / NIST
Published: 2020-05-08T12:15:11.067+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 7.06%

Last modified Jun 17, 2026

CVE-2020-10638 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple heap-based buffer overflow vulnerabilities exist caused by a lack of proper validation of the length of user-supplied data, which may allow remote code execution.. EPSS estimates a 7.06% chance of exploitation in the next 30 days.

Description

Advantech WebAccess Node, Version 8.4.4 and prior, Version 9.0.0. Multiple heap-based buffer overflow vulnerabilities exist caused by a lack of proper validation of the length of user-supplied data, which 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

7.06%

93.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Advantech	Webaccess	<= 8.4.4
Advantech	Webaccess	9.0.0

References

https://www.us-cert.gov/ics/advisories/icsa-20-128-01Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-20-593/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-599/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-600/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-603/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-616/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-621/Third Party Advisory, VDB Entry
https://www.us-cert.gov/ics/advisories/icsa-20-128-01Third Party Advisory, US Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-20-593/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-599/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-600/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-603/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-616/Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-621/Third Party Advisory, VDB Entry

Timeline

Published: May 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10638?

How severe is CVE-2020-10638?

CVE-2020-10638 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 7.06% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10638?

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-2020-10638?

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

Scan your code now

Source: NVD / NIST