CVE-2021-33485: CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow

Critical severity · published Aug 3, 2021

CVE-2021-33485

CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow

9.8

CVSS

1.1%

EPSS

On KEV

Description

CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.1% · higher than 66% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

before 4.2.0.0; before 4.2.0.0; before 4.2.0.0; through 4.2.0.0; before 4.2.0.0; before 4.2.0.0; +3 more · source: NVD

before 3.5.17.10; before 3.5.17.10 · source: NVD