High severity7.5NVD Advisory· Published May 20, 2021· Updated Jun 17, 2026
CVE-2021-27434
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.
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Affected products
3- Range: <=3.0.7
- cpe:2.3:a:unified-automation:.net_based_opc_ua_client\/server_sdk:*:*:*:*:*:*:*:*Range: <=3.0.7
- Range: <=V3.0.7
Patches
Vulnerability mechanics
References
1- us-cert.cisa.gov/ics/advisories/icsa-21-133-04nvdThird Party AdvisoryUS Government Resource
News mentions
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