CVE-2021-29241
7.5 HIGHCODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS)
Published: 2021-05-03 · Last updated: 2026-05-29
Severity and scoring
- CVSS
- 7.5 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-476
Affected products
| Vendor | Product |
|---|---|
| codesys | control_for_beaglebone_sl, control_for_empc-a\/imx6_sl, control_for_iot2000_sl |
Description
CODESYS Gateway 3 before 3.5.16.70 has a NULL pointer dereference that may result in a denial of service (DoS).
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-29241
- [Vendor advisory]https://customers.codesys.com/index.php
- [Vendor advisory]https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14637&token=8dbd75ae7553ae3be25e22f741db783b31e14799&download=
- [Vendor advisory]https://www.codesys.com/security/security-reports.html
- [Vendor advisory]https://customers.codesys.com/index.php
- [Vendor advisory]https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14637&token=8dbd75ae7553ae3be25e22f741db783b31e14799&download=
- [Vendor advisory]https://www.codesys.com/security/security-reports.html
Related CVEs
Same vendor
- CVE-2026-44469 — The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative instal... (7.8 HIGH)
- CVE-2026-44468 — The affected product creates a directory with insecure default permissions during administrative installation (7.8 HIGH)
- CVE-2026-0393 — The affected product may expose credentials remotely between low privileged visualization users during concurrent login operations due to... (6.5 MEDIUM)
- CVE-2021-33485 — CODESYS Control Runtime system before 3.5.17.10 has a Heap-based Buffer Overflow (9.8 CRITICAL)
Same CWE
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- CVE-2026-24716 — A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions
- CVE-2026-22899 — A NULL pointer dereference vulnerability has been reported to affect File Station 6
- CVE-2025-66281 — A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions
- CVE-2025-62850 — A NULL pointer dereference vulnerability has been reported to affect several QNAP operating system versions