PT-2021-3341 · 3S Smart Software Solutions · Codesys V2 Web-Server

Anton Dorfman + 1 · Published 2021-05-25 · Updated 2025-08-15 · CVE-2021-30192

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions CODESYS V2 Web-Server versions prior to 1.1.9.20

Description The issue is related to an improperly implemented security check in the CODESYS V2 Web-Server, which is associated with inadequate access control. This can allow a remote attacker to impact the confidentiality, integrity, and availability of protected information.

Recommendations For versions prior to 1.1.9.20, update to version 1.1.9.20 or later to resolve the issue. As a temporary workaround, consider restricting access to the web server to minimize the risk of exploitation.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

BDU:2021-03150

CVE-2021-30192

Affected Products

Codesys V2 Web-Server

References · 9

• https://bdu.fstec.ru/vul/2021-03150 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30192 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30192 · Security Note
• https://customers.codesys.com/index.php · Vendor Advisory
• https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14726&token=553da5d11234bbe1ceed59969d419a71bb8c8747&download= · Vendor Advisory
• https://xakep.ru/2021/06/04/codesys-flaws · Note
• https://t.me/cvenotify/14996 · Telegram Post
• https://t.me/cvenotify/15144 · Telegram Post
• https://t.me/cveNotify/132545 · Telegram Post