SEPTEMBER 30, 2026
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Case File

CVE-2021-30189

CRITICAL · CVSS 9.8 EPSS 1.27%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-05-25 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. See the original NVD description below for full technical details.

CVE
CVE-2021-30189
Severity
CRITICAL
CVSS
9.8
EPSS
1.27%

Original NVD Description

CODESYS V2 Web-Server before 1.1.9.20 has a Stack-based Buffer Overflow.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-44469 HIGH CVE-2026-44468 HIGH CVE-2026-0393 MEDIUM CVE-2025-41732 CRITICAL CVE-2025-41730 CRITICAL CVE-2025-41738 HIGH