AUGUST 4, 2026
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Case File

CVE-2020-27263

CRITICAL · CVSS 9.1 EPSS 4.94%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-14 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. See the original NVD description below for full technical details.

CVE
CVE-2020-27263
Severity
CRITICAL
CVSS
9.1
EPSS
4.94%

Original NVD Description

KEPServerEX: v6.0 to v6.9, ThingWorx Kepware Server: v6.8 and v6.9, ThingWorx Industrial Connectivity: All versions, OPC-Aggregator: All versions, Rockwell Automation KEPServer Enterprise, GE Digital Industrial Gateway Server: v7.68.804 and v7.66, Software Toolbox TOP Server: All 6.x versions, are vulnerable to a heap-based buffer overflow. Opening a specifically crafted OPC UA message could allow an attacker to crash the server and potentially leak data.

Related CVEs

Other vulnerabilities affecting the same vendor(s)