CVE-2021-29241
CODESYS Gateway 3 before 3.5.17.0 has a NULL pointer dereference that may result in a denial of...
CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).
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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).
- Record
CVE-2021-29241- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-476
- Updated
- 2026-11-02
CVE List
CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).
- Record
CVE-2021-29241- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-476
- Updated
- 2026-11-02
EUVDEUVD-2021-15880
CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).
- Record
EUVD-2021-15880- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-2hc4-qjj9-7p6r
CODESYS Gateway 3 before 3.5.17.0 has a NULL pointer dereference that may result in a denial of...
CODESYS Gateway 3 before 3.5.17.0 has a NULL pointer dereference that may result in a denial of service (DoS).
- Record
GHSA-2hc4-qjj9-7p6r- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-476
- Updated
- 2026-11-02
Affected products
- codesys gateway
- codesys control for beaglebone sl
- codesys control for empc-a\/imx6 sl
- codesys control for iot2000 sl
- codesys control for linux sl
- codesys control for pfc100 sl
- codesys control for pfc200 sl
- codesys control for raspberry pi sl
- codesys control runtime system toolkit
- codesys development system
- codesys edge gateway
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-29241 is a high vulnerability (CVSS 7.5) in Codesys Gateway, published May 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.70%, the 77th percentile. No source names a fixed version.