Out-of-bounds read in OMRON CX-Supervisor
Priority LOW 30CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Out-of-bounds read vulnerability in CX-Supervisor v4.0.0.13 and v4.0.0.16 allows an attacker with administrative privileges to cause information disclosure and/or arbitrary code execution by opening a specially crafted SCS project files.
Why it matters now
EPSS 0.00806 57th 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 |
|---|---|---|---|---|---|
| OMRON Corporation | OMRON CX-Supervisor | v4.0.0.13 and v4.0.0.16 | — | No fix listed | CNA |
- OMRON CX-Supervisor VendorOMRON Corporation Affected v4.0.0.13 and v4.0.0.16 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:omron:cx-supervisor:4.0.0.13:*:*:*:*:*:*:* | 4.0.0.13 | Vulnerable | OMRON Corporation |
| cpe:2.3:a:omron:cx-supervisor:4.0.0.16:*:*:*:*:*:*:* | 4.0.0.16 | Vulnerable | OMRON Corporation |
- cpe:2.3:a:omron:cx-supervisor:4.0.0.13:*:*:*:*:*:*:* Versions 4.0.0.13 Vulnerable ·OMRON Corporation
- cpe:2.3:a:omron:cx-supervisor:4.0.0.16:*:*:*:*:*:*:* Versions 4.0.0.16 Vulnerable ·OMRON Corporation
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20836
- 2026-10-03 Alias added: GHSA-vphf-83wr-763v
References
More OMRON Corporation Cx-supervisor vulnerabilities
- TI-2018-13481 Use after free in ICS-CERT CX-Supervisor CVSS 3.0HIGH 8.8
- TI-2018-13475 Code injection in ICS-CERT CX-Supervisor CVSS 3.0HIGH 8.8
- TI-2019-13268 In Omron CX-Supervisor, Versions 3.5 (12) and prior, Omron CX-Supervisor ships with… CVSS 3.1HIGH 8.8
- TI-2018-12745 Incorrect type conversion in OMRON Corporation CX-Supervisor CVSS 3.0HIGH 7.8
- TI-2018-12741 Use after free in OMRON Corporation CX-Supervisor CVSS 3.0HIGH 7.8
- TI-2018-12737 Memory corruption in OMRON Corporation CX-Supervisor CVSS 3.0HIGH 7.8
Sources
- CVE-2021-20836 · CVE Program
- CVE-2021-20836 · NVD
- FIRST EPSS
- GHSA-vphf-83wr-763v · 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