CVE-2021-36763
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.
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
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 List No 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-2021-23351 No 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-xvqv No 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
Affected products
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.
In short
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 68th percentile. No source names a fixed version.