CVE-2021-34596

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

A crafted request may cause a read access to an uninitialized pointer in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-824

Affected software

Vendor	Product	Versions
CODESYS	CODESYS V2	>= Runtime Toolkit 32 bit full, < V2.4.7.56; >= PLCWinNT, < V2.4.7.56

References

Timeline

Published: Oct 26, 2021
Last modified: Jun 17, 2026
NVD status: Analyzed

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