Deserialization in Codesys Development System

CVE-2021-21863

A unsafe deserialization vulnerability exists in the ComponentModel Profile.FromFile() functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (68.3th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-21863: held from 0.012 to 0.012.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

  • Codesys Development System — versions 3.5.16.0, 3.5.17.0
  • Codesys — versions CODESYS GmbH CODESYS Development System 3.5.16 ,CODESYS GmbH CODESYS Development System 3.5.17

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-21863?
CVE-2021-21863 is a high-severity vulnerability in Codesys Development System, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2021-08-05.
How severe is CVE-2021-21863?
High severity. CVSS v3 base score is 7.8 out of 10.