Memory corruption in 3S
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
An exploitable memory corruption vulnerability exists in the Name Service Client functionality of 3S-Smart Software Solutions CODESYS GatewayService. A specially crafted packet can cause a large memcpy, resulting in an access violation and termination of the process. An attacker can send a packet to a device running the GatewayService.exe to trigger this vulnerability. All variants of the CODESYS V3 products in all versions prior V3.5.16.10 containing the CmpRouter or CmpRouterEmbedded component are affected, regardless of the CPU type or operating system: CODESYS Control for BeagleBone, CODESYS Control for emPC-A/iMX6, CODESYS Control for IOT2000, CODESYS Control for Linux, CODESYS Control for PLCnext, CODESYS Control for PFC100, CODESYS Control for PFC200, CODESYS Control for Raspberry Pi, CODESYS Control RTE V3, CODESYS Control RTE V3 (for Beckhoff CX), CODESYS Control Win V3 (also part of the CODESYS Development System setup), CODESYS Control V3 Runtime System Toolkit, CODESYS V3 Embedded Target Visu Toolkit, CODESYS V3 Remote Target Visu Toolkit, CODESYS V3 Safety SIL2, CODESYS Edge Gateway V3, CODESYS Gateway V3, CODESYS HMI V3, CODESYS OPC Server V3, CODESYS PLCHandler SDK, CODESYS V3 Simulation Runtime (part of the CODESYS Development System).
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | 3S | 3S-Smart Software Solutions CODESYS 3.5.15.0 | — | No fix listed | CNA |
- 3S Vendor— Affected 3S-Smart Software Solutions CODESYS 3.5.15.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-5105
- 2026-10-03 Alias added: GHSA-fhfx-4gh6-9wc2
References
More Codesys vulnerabilities
- TI-2021-13604 CODESYS V2 web server: crafted requests could trigger a null pointer dereference (DoS) CVSS 3.1HIGH 7.5
- TI-2019-12244 CODESYS V2.3 ENI server up to V3.2.2.24 has a Buffer Overflow. CVSS 3.1CRITICAL 9.8
- TI-2021-13601 CODESYS V2 web server: crafted requests could trigger a heap-based buffer overflow (DoS) CVSS 3.1HIGH 7.5
- TI-2021-13602 CODESYS V2 web server: crafted requests could trigger a buffer over-read (DoS) CVSS 3.1CRITICAL 9.1
- TI-2019-10170 3S-Smart Software Solutions GmbH CODESYS V3 Library Manager, all versions prior to… CVSS 3.1HIGH 8.6
- TI-2021-04914 Deserialization of untrusted data in CODESYS CVSS 3.1HIGH 7.8
Sources
- CVE-2019-5105 · CVE Program
- CVE-2019-5105 · NVD
- FIRST EPSS
- GHSA-fhfx-4gh6-9wc2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences