VULNERABILITY INTELLIGENCE

CVE-2021-34593

CVSS score7.5 HIGH
EPSS probability2.66%
CISA KEVNot currently listed
Published2021-10-26
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or further communication clients may be blocked from accessing the PLC.

Weakness classification

  • info@cert.vde.com: CWE-755

Primary references