CVE-2021-29241

7.5 HIGH

Published: May 03, 2021 Modified: May 29, 2026

View on NVD

Description

CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://customers.codesys.com/index.php

Source: cve@mitre.org

Permissions Required Vendor Advisory

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14637&token=8dbd75ae7553ae3be25e22f741db783b31e14799&download=

Source: cve@mitre.org

Vendor Advisory

https://www.codesys.com/security/security-reports.html

Source: cve@mitre.org

Vendor Advisory

https://customers.codesys.com/index.php

Source: af854a3a-2127-422b-91ae-364da2661108

Permissions Required Vendor Advisory

https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14637&token=8dbd75ae7553ae3be25e22f741db783b31e14799&download=

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.codesys.com/security/security-reports.html

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

6 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

1.4%

69th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-476 CWE-476

Affected Vendors

codesys

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