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Vulnerability record · CVE-2021-36763 · published 3 August 2021

CVE-2021-36763: Codesys control vulnerability

Codesys · Control

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

7.5 CVSS 3.1 High EPSS 1.0% · top 38.2% CWE-552 · CWE-552
7.5CVSS 3.1 base score, v2 5.0
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16803&token=0b8edf9276dc39ee52f43026c415c5b38085d90a&download Vendor Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16803&token=0b8edf9276dc39ee52f43026c415c5b38085d90a&download Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-33485Codesys control out-of-bounds write vulnerabilityCODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow.EPSS 1.1%9.8CVE-2020-10245Codesys control for beaglebone out-of-bounds write vulnerabilityCODESYS V3 web server before 3.5.15.40, as used in CODESYS Control runtime systems, has a buffer overflow.EPSS 2.5%9.8CVE-2019-18858Codesys control for beaglebone classic buffer overflow vulnerabilityCODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.EPSS 1.9%9.8CVE-2019-13548Codesys control for beaglebone stack-based buffer overflow vulnerabilityCODESYS V3 web server, all versions prior to 3.5.14.10, allows an attacker to send specially crafted http or https requests which could cause a stack…EPSS 5.8%9.8CVE-2018-10612Codesys control for beaglebone sl improper access control vulnerabilityIn 3S-Smart Software Solutions GmbH CODESYS Control V3 products prior to version 3.5.14.0, user access management and communication encryption is not…EPSS 1.3%8.8CVE-2022-4046Codesys control for beaglebone sl memory buffer overflow vulnerabilityIn CODESYS Control in multiple versions a improper restriction of operations within the bounds of a memory buffer allow an remote attacker with user …EPSS 0.88%8.8CVE-2022-47387Codesys control for beaglebone sl out-of-bounds write vulnerabilityAn authenticated remote attacker may use a stack based out-of-bounds write vulnerability in the CmpTraceMgr Component of multiple CODESYS products in…EPSS 1.3%8.8CVE-2022-47388Codesys control for beaglebone sl out-of-bounds write vulnerabilityAn authenticated, remote attacker may use a stack based out-of-bounds write vulnerability in the CmpTraceMgr Component of multiple CODESYS products i…EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2021-36763), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.