CVE-2021-38426

Name: CVE-2021-38426
Creator: NVD / NIST
Published: 2021-10-18T13:15:09.57+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.91%

Last modified Jun 17, 2026

CVE-2021-38426 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. FATEK Automation WinProladder versions 3.30 and prior lacks proper validation of user-supplied data when parsing project files, which could result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code.. EPSS estimates a 0.91% chance of exploitation in the next 30 days.

Description

FATEK Automation WinProladder versions 3.30 and prior lacks proper validation of user-supplied data when parsing project files, which could result in an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.91%

55.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Fatek	Winproladder	<= 3.30

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-280-06Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-280-06Third Party Advisory, US Government Resource

Timeline

Published: Oct 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-38426?

How severe is CVE-2021-38426?

CVE-2021-38426 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.

How do I fix CVE-2021-38426?

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-2021-38426?

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

Scan your code now

Source: NVD / NIST