Vulnerability-Lookup

CVE-2021-36763 (GCVE-0-2021-36763)

Vulnerability from cvelistv5 – Published: 2021-08-03 15:49 – Updated: 2024-08-04 01:01

Summary

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

Severity

7.5 (High)


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

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://customers.codesys.com/index.php?eID=dumpF…	x_refsource_CONFIRM

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FKIE_CVE-2021-36763

Vulnerability from fkie_nvd - Published: 2021-08-03 16:15 - Updated: 2026-06-17 03:59

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

References

	URL	Tags
	cve@mitre.org	https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16803&token=0b8edf9276dc39ee52f43026c415c5b38085d90a&download=	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16803&token=0b8edf9276dc39ee52f43026c415c5b38085d90a&download=	Vendor Advisory

Impacted products

Vendor	Product	Version
codesys	control	*
codesys	control	*
codesys	control	*
codesys	control	*
codesys	control	*
codesys	control	*
codesys	control	*
codesys	control	*
codesys	control	*
codesys	control_rte	*
codesys	control_rte	*
codesys	control_runtime_system_toolkit	*
codesys	control_win_sl	*
codesys	embedded_target_visu_toolkit	*
codesys	hmi	*
codesys	remote_target_visu_toolkit	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
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          "vendor": "n/a",
          "versions": [
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  "lastModified": "2026-06-17T03:59:07.600",
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  "published": "2021-08-03T16:15:08.657",
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      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
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    },
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}

FSA-202202

Vulnerability from csaf_festosecokg - Published: 2022-07-18 10:00 - Updated: 2025-11-03 11:00

Summary

Festo: Controller CECC-S,LK,D family <= 2.3.8.1 - multiple vulnerabilities in CODESYS V3 runtime system

Scope

33 vulnerabilities in this advisory, including CVE-2021-36763.

CVE-2021-36763

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

7.5 (High)


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

Known affected: 6 products

Open the full advisory

FSA-202203

Vulnerability from csaf_festosecokg - Published: 2022-07-18 10:00 - Updated: 2025-07-10 10:00

Summary

Festo: Controller CECC-S,LK,D family firmware 2.4.2.0 - multiple vulnerabilities in CODESYS V3 runtime system

Scope

18 vulnerabilities in this advisory, including CVE-2021-36763.

CVE-2021-36763

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

7.5 (High)


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

Known affected: 3 products

Open the full advisory

FSA-202601

Vulnerability from csaf_festosecokg - Published: 2026-02-26 08:00 - Updated: 2026-02-26 08:00

Summary

Several CODESYS vulnerabilities in Festo Automation Suite

Severity

Critical

Scope

126 vulnerabilities in this advisory, including CVE-2021-36763.

CVE-2021-36763

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

7.5 (High)


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

Fixed: 1 product Known affected: 4 products

Open the full advisory

GHSA-W4JX-JW2G-XVQV

Vulnerability from github – Published: 2022-05-24 19:09 – Updated: 2022-05-24 19:09

Details

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-36763"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-552"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-08-03T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.",
  "id": "GHSA-w4jx-jw2g-xvqv",
  "modified": "2022-05-24T19:09:51Z",
  "published": "2022-05-24T19:09:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36763"
    },
    {
      "type": "WEB",
      "url": "https://customers.codesys.com/index.php?eID=dumpFile\u0026t=f\u0026f=16803\u0026token=0b8edf9276dc39ee52f43026c415c5b38085d90a\u0026download="
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GSD-2021-36763

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

Aliases

CVE-2021-36763

Aliases

CVE-2021-36763

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-36763",
    "description": "In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.",
    "id": "GSD-2021-36763"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      ],
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      "modified": "2023-12-13T01:23:16.680690Z",
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      "publishedDate": "2021-08-03T16:15Z"
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  }
}

ICSA-25-273-04

Vulnerability from csaf_cisa - Published: 2025-09-30 06:00 - Updated: 2025-11-13 07:00

Summary

Festo Controller CECC-S,-LK,-D Family Firmware (Update A)

Scope

33 vulnerabilities in this advisory, including CVE-2021-36763.

CVE-2021-36763

7.5 (High)


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

Known affected: 6 products

https://certvde.com/en/advisories/VDE-2022-022/ https://festo.csaf-tp.certvde.com/.well-known/csaf/white/20…

Open the full advisory

ICSA-26-076-01

Vulnerability from csaf_cisa - Published: 2026-02-26 08:00 - Updated: 2026-03-17 06:00

Summary

CODESYS in Festo Automation Suite

Severity

Critical

Scope

126 vulnerabilities in this advisory, including CVE-2021-36763.

CVE-2021-36763

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

7.5 (High)


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

Fixed: 1 product Known affected: 4 products

Open the full advisory

VAR-202108-1803

Vulnerability from variot - Updated: 2023-12-18 13:22

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties

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VDE-2022-035

Vulnerability from csaf_wagogmbhcokg - Published: 2022-08-17 08:00 - Updated: 2022-08-17 08:00

Summary

WAGO: Multiple product series affected by multiple CODESYS vulnerabilities

Scope

6 vulnerabilities in this advisory, including CVE-2021-36763.

CVE-2021-36763

In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.

7.5 (High)


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

Known affected: 5 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2021-36763 (GCVE-0-2021-36763)

Tags

Sightings

Nomenclature

Related by attack behaviour