PT-2021-3340 · 3S Smart Software Solutions · Codesys V2 Runtime System

Ivan Kurnakov + 1 · Published 2021-05-25 · Updated 2025-08-15 · CVE-2021-30187

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions CODESYS V2 runtime system SP versions prior to 2.4.7.55

Description The issue arises from the improper neutralization of special elements used in an OS command, potentially allowing an attacker to impact the confidentiality, integrity, and availability of protected information.

Recommendations For versions prior to 2.4.7.55, update to version 2.4.7.55 or later to resolve the issue.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2021-03149

CVE-2021-30187

Affected Products

Codesys V2 Runtime System

References · 8

• https://osv.dev/vulnerability/CVE-2021-30187 · Vendor Advisory
• https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14727&token=25159b0fc4355f4c6bc2e074a519a9d0cdb23fbb&download= · Vendor Advisory
• https://customers.codesys.com/index.php · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30187 · Security Note
• https://bdu.fstec.ru/vul/2021-03149 · Security Note
• https://xakep.ru/2021/06/04/codesys-flaws · Note
• https://t.me/cveNotify/132540 · Telegram Post
• https://t.me/cvenotify/14984 · Telegram Post