VULNERABILITY INTELLIGENCE

CVE-2021-27434

CVSS score7.5 HIGH
EPSS probability1.74%
CISA KEVNot currently listed
Published2021-05-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • ics-cert@hq.dhs.gov: CWE-200
  • nvd@nist.gov: CWE-674

Primary references