CVE-2021-34595 HIGH

CVE-2021-34595: CODESYS V2 runtime: out-of-bounds read or write access may result in denial-of-service

Vendor Codesys
Product CODESYS V2
Weakness CWE-823
Published October 26, 2021
Last update September 17, 2024
View on NVD All CVEs

CVSS base score

8.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition or local memory overwrite.

Key dates

02Disclosure timeline

October 26, 2021 CVE published
September 17, 2024 Record updated