7.5
CWE
674
Advisory Published
Updated

CVE-2021-27432

First published: Thu May 20 2021(Updated: )

OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.

Credit: ics-cert@hq.dhs.gov

Affected SoftwareAffected VersionHow to fix
Opcfoundation Ua-.net-legacy
Opcfoundation Ua .net Standard Stack<1.4.365.48
OPC Foundation OPC UA .NET Standard: versions prior to 1.4.365.48
OPC Foundation OPC UA .NET Legacy

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2021-27432?

    CVE-2021-27432 is a vulnerability in OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy that allows an attacker to trigger a stack overflow through uncontrolled recursion.

  • How severe is CVE-2021-27432?

    CVE-2021-27432 has a severity rating of 7.5 (high).

  • What is the affected software?

    The affected software includes OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy.

  • What is the Common Weakness Enumeration (CWE) ID for CVE-2021-27432?

    The CWE ID for CVE-2021-27432 is 674.

  • Where can I find more information about CVE-2021-27432?

    More information about CVE-2021-27432 can be found at this reference: https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03

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