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EUVD-2021-21233

🗓️ 07 Oct 2025 00:30:54Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 2 Views

Heap overflow in CODESYS V2 web server may lead to denial-of-service conditions by crashing server.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2021-34583
26 Oct 202114:14
circl
CNNVD
CODESYS 安全漏洞
26 Oct 202100:00
cnnvd
CVE
CVE-2021-34583
26 Oct 202109:55
cve
Cvelist
CVE-2021-34583 CODESYS V2 web server: crafted requests could trigger a heap-based buffer overflow (DoS)
26 Oct 202109:55
cvelist
NVD
CVE-2021-34583
26 Oct 202110:15
nvd
OSV
CVE-2021-34583
26 Oct 202110:15
osv
Prion
Heap overflow
26 Oct 202110:15
prion
Positive Technologies
PT-2021-20564 · 3S Smart Software Solutions · Codesys V2
26 Oct 202100:00
ptsecurity
Tenable Nessus
Wago CODESYS V2 Web-Server Heap-based Buffer Overflow (CVE-2021-34583)
9 Sep 202500:00
nessus
[
  {
    "enisaIdVendor": [
      {
        "id": "8fc4b1aa-19a7-3644-a4e1-fb8487f20cc2",
        "vendor": {
          "name": "CODESYS"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "04f7a735-37ca-3b88-9627-3ddeba427830",
        "product": {
          "name": "CODESYS V2"
        },
        "product_version": "all web servers <V1.1.9.22"
      }
    ]
  }
]

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07 Oct 2025 00:30Current
7.5High risk
Vulners AI Score7.5
CVSS 3.17.5
CVSS 25
EPSS0.00693
2