AUGUST 4, 2026
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Case File

CVE-2021-27434

HIGH · CVSS 7.5 EPSS 1.74%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-20 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2021-27434
Severity
HIGH
CVSS
7.5
EPSS
1.74%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)