CVE-2021-34596 MEDIUM

CVE-2021-34596: CODESYS V2 runtime: Access of Uninitialized Pointer may result in denial-of-service

Vendor Codesys
Product CODESYS V2
Weakness CWE-824
Published October 26, 2021
Last update September 16, 2024
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 26, 2021 CVE published
September 16, 2024 Record updated