CVE-2021-36763
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
CVE-2021-36763 is a high vulnerability (CVSS 7.5) in Codesys Control, published August 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.21%, the 69th percentile. No source names a fixed version.
- Severity
- 7.5 HighCVSS 3.1, NVD
- Exploit chance
- 1.21%EPSS, 69th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
Affected products
What each source reports
NVD Score used
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
- Record
CVE-2021-36763- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-552
- Updated
- 2026-11-02
CVE ListNo score
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
- Record
CVE-2021-36763- Updated
- 2026-11-02
EUVDEUVD-2021-23351No score
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
- Record
EUVD-2021-23351- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w4jx-jw2g-xvqvNo score
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
In CODESYS V3 web server before 3.5.17.10, files or directories are accessible to External Parties.
- Record
GHSA-w4jx-jw2g-xvqv- Weakness
- CWE-552
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.