Stack-based buffer overflow in CX-One
Priority LOW 38CWE-121Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
Two stack-based buffer overflow vulnerabilities have been discovered in CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior). When processing project files, the application allows input data to exceed the buffer. An attacker could use a specially crafted project file to overflow the buffer and execute code under the privileges of the application.
Why it matters now
EPSS 0.01754 78th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| — | CX-One (CX-Programmer and CX-Server) | CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior) | — | No fix listed | CNA |
- CX-One (CX-Programmer and CX-Server) Vendor— Affected CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior) Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:omron:cx-one:*:*:*:*:*:*:*:* | up to 4.42 | Vulnerable | OMRON Corporation |
| cpe:2.3:a:omron:cx-programmer:*:*:*:*:*:*:*:* | up to 9.66 | Vulnerable | OMRON Corporation |
| cpe:2.3:a:omron:cx-server:*:*:*:*:*:*:*:* | up to 5.0.23 | Vulnerable | OMRON Corporation |
- cpe:2.3:a:omron:cx-one:*:*:*:*:*:*:*:* Versions up to 4.42 Vulnerable ·OMRON Corporation
- cpe:2.3:a:omron:cx-programmer:*:*:*:*:*:*:*:* Versions up to 9.66 Vulnerable ·OMRON Corporation
- cpe:2.3:a:omron:cx-server:*:*:*:*:*:*:*:* Versions up to 5.0.23 Vulnerable ·OMRON Corporation
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-18993
- 2026-10-03 Alias added: GHSA-8fhw-7m75-ff9v
References
More OMRON Corporation Cx-one vulnerabilities
- TI-2020-16587 Stack-based buffer overflow in OMRON Corporation CX-One CVSS 3.1HIGH 8.8
- TI-2022-05541 Stack-based buffer overflow in OMRON Corporation CX-One CVSS 3.1HIGH 7.8
- TI-2021-08904 Stack-based buffer overflow in Omron CX-One CVSS 3.1HIGH 7.8
- TI-2020-16585 The Omron CX-One Version 4.60 and prior may allow an attacker to supply a pointer to… CVSS 3.1HIGH 8.8
- TI-2020-16583 Type confusion in OMRON Corporation CX-One CVSS 3.1HIGH 7.8
- TI-2018-13488 Type confusion in OMRON Corporation CX-Protocol within CX-One CVSS 3.0HIGH 7.8
Sources
- CVE-2018-18993 · CVE Program
- CVE-2018-18993 · NVD
- FIRST EPSS
- GHSA-8fhw-7m75-ff9v · GitHub Advisory Database · CC BY 4.0
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