What is CVE-2021-29242?

CVE-2021-29242 is a high-severity vulnerability in Codesys Control For Beaglebone Sl, classified under Improper Input Validation. CVSS score: 7.3/10. Published 2021-05-03.

How severe is CVE-2021-29242?

High severity. CVSS v3 base score is 7.3 out of 10.

Improper input validation in Codesys Control For Beaglebone Sl

CVE-2021-29242

CODESYS Control Runtime system before 3.5.17.0 has improper input validation. Attackers can send crafted communication packets to change the router's addressing scheme and may re-route, add, remove or change low level communication packages.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-05-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.011 (63.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

customers.codesys.com/index.php (Permissions Required, Vendor Advisory)
www.codesys.com/security/security-reports.html (Vendor Advisory)
customers.codesys.com/index.php (Vendor Advisory)

Frequently asked questions

What is CVE-2021-29242?: CVE-2021-29242 is a high-severity vulnerability in Codesys Control For Beaglebone Sl, classified under Improper Input Validation. CVSS score: 7.3/10. Published 2021-05-03.
How severe is CVE-2021-29242?: High severity. CVSS v3 base score is 7.3 out of 10.