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CVE-2021-21863

🗓️ 05 Aug 2021 20:00:34Reported by talosType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 4 Media mentions👁 91 Views

- Unsafe deserialization vulnerability in CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17 allows arbitrary command execution via specially crafted files

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Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2021-21863
5 Aug 202120:15
–attackerkb
bdu_fstec
BDU FSTEC
CODESYS Development System Profile ComponentModel Command Execution
24 May 202300:00
–bdu_fstec
circl
Circl
CVE-2021-21863
17 Mar 202612:00
–circl
cnnvd
CNNVD
3s-smart Software Solutions CODESYS Development System Code Issues and Vulnerabilities
26 Jul 202100:00
–cnnvd
cvelist
Cvelist
CVE-2021-21863
5 Aug 202120:00
–cvelist
euvd
EUVD
EUVD-2021-9034
3 Oct 202520:07
–euvd
nvd
NVD
CVE-2021-21863
5 Aug 202120:15
–nvd
osv_cve
osv_cve
CVE-2021-21863
5 Aug 202120:15
–osv_cve
prion
Prion
Deserialization of untrusted data
5 Aug 202120:15
–prion
ptsecurity
Positive Technologies
PT-2021-7779 · 3S Smart Software Solutions · Codesys Development System
5 Aug 202100:00
–ptsecurity
Rows per page
NVD
Vulners
[
  {
    "product": "CODESYS",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "CODESYS GmbH CODESYS Development System 3.5.16 ,CODESYS GmbH CODESYS Development System 3.5.17"
      }
    ]
  }
]

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17 Jun 2026 03:36Current
7.7High risk
Vulners AI Score7.7
CVSS 26.8
CVSS 3.17.8
CVSS 38.8
EPSS0.01215
91