What’s Vulnerable › Vulnerabilities

CVE-2020-27261: Omron CX-One

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-09 · updated 2026-06-17
• Weakness: CWE-121

Description

The Omron CX-One Version 4.60 and prior is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code.

Affected products

• Omron CX-One: through 4.60
• Omron CX-Position: through 2.52
• Omron CX-Protocol: through 2.02
• Omron CX-Server: through 5.0.28

References

• https://us-cert.cisa.gov/ics/advisories/icsa-21-007-02
• https://www.zerodayinitiative.com/advisories/ZDI-21-183/
• https://www.zerodayinitiative.com/advisories/ZDI-21-185/
• https://us-cert.cisa.gov/ics/advisories/icsa-21-007-02
• https://www.zerodayinitiative.com/advisories/ZDI-21-183/
• https://www.zerodayinitiative.com/advisories/ZDI-21-185/

Get alerted when CVE-2020-27261 or the next vulnerability affects your stack