CVE-2021-27434

Description

Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.22%
Third-Party Advisory cisa.gov
Affected: n/a OPC UA Products Built with the .NET Framework 4.5, 4.0, and 3.5
Published at:
Updated at:

References

Link Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2021-27434?
CVE-2021-27434 has been scored as a high severity vulnerability.
How to fix CVE-2021-27434?
To fix CVE-2021-27434, 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-2021-27434 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-27434 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-27434?
CVE-2021-27434 affects n/a OPC UA Products Built with the .NET Framework 4.5, 4.0, and 3.5.
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