CVE-2021-21867
First published: Wed Aug 18 2021(Updated: )
An unsafe deserialization vulnerability exists in the ObjectManager.plugin ObjectStream.ProfileByteArray 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.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Codesys | =3.5.16.0 | |
| Codesys | =3.5.17.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-21867?
CVE-2021-21867 has a severity rating that indicates a risk of arbitrary command execution due to unsafe deserialization.
How do I fix CVE-2021-21867?
To fix CVE-2021-21867, upgrade to the latest version of CODESYS Development System beyond 3.5.17.
What versions of CODESYS are affected by CVE-2021-21867?
CVE-2021-21867 affects CODESYS Development System versions 3.5.16.0 and 3.5.17.0.
What type of vulnerability is CVE-2021-21867?
CVE-2021-21867 is categorized as an unsafe deserialization vulnerability.
Can CVE-2021-21867 be exploited remotely?
Yes, an attacker can exploit CVE-2021-21867 by providing a specially crafted file to the affected system.
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/remedy
- agent/last-modified-date
- agent/severity
- agent/weakness
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/codesys
- canonical/codesys
- version/codesys/3.5.16.0
- version/codesys/3.5.17.0