AUGUST 4, 2026
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Case File

CVE-2021-34586

HIGH · CVSS 7.5 EPSS 13.08%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-10-26 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. Its EPSS score suggests a 13.1% probability of exploitation in the next 30 days. It may lead to a denial-of-service condition.

CVE
CVE-2021-34586
Severity
HIGH
CVSS
7.5
EPSS
13.08%

Original NVD Description

In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests may cause a Null pointer dereference in the CODESYS web server and may result in a denial-of-service condition.

Related CVEs

Other vulnerabilities affecting the same vendor(s)