CVE-2021-40142

Description

In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.55%
Vendor Advisory opcfoundation.org Vendor Advisory opcfoundation.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://opcfoundation.org/security-bulletins/ vendor advisory
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-40142.pdf patch vendor advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdf third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-40142?
CVE-2021-40142 has been scored as a high severity vulnerability.
How to fix CVE-2021-40142?
To fix CVE-2021-40142, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40142 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-40142 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.