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Vulnerability record · CVE-2020-27261 · published 9 February 2021

CVE-2020-27261: Omron cx-one stack-based buffer overflow vulnerability

OOmron · Cx One

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.

8.8 CVSS 3.1 High EPSS 7.6% · top 5.7% CWE-121 · Stack-based buffer overflowCWE-787 · Out-of-bounds write
8.8CVSS 3.1 base score, v2 6.8
7.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://us-cert.cisa.gov/ics/advisories/icsa-21-007-02 Third Party AdvisoryUS Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-183/ Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-185/ Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-007-02 Third Party AdvisoryUS Government Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-183/ Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-185/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2020-27259Omron cx-one vulnerabilityThe Omron CX-One Version 4.60 and prior may allow an attacker to supply a pointer to arbitrary memory locations, which may allow an attacker to remot…EPSS 2.7%7.8CVE-2022-25959Omron cx-position memory buffer overflow vulnerabilityOmron CX-Position (versions 2.5.3 and prior) is vulnerable to memory corruption while processing a specific project file, which may allow an attacker…EPSS 1.5%7.8CVE-2022-26022Omron cx-position out-of-bounds write vulnerabilityOmron CX-Position (versions 2.5.3 and prior) is vulnerable to an out-of-bounds write while processing a specific project file, which may allow an att…EPSS 1.5%7.8CVE-2022-26417Omron cx-position use after free vulnerabilityOmron CX-Position (versions 2.5.3 and prior) is vulnerable to a use after free memory condition while processing a specific project file, which may a…EPSS 1.5%7.8CVE-2022-26419Omron cx-position stack-based buffer overflow vulnerabilityOmron CX-Position (versions 2.5.3 and prior) is vulnerable to multiple stack-based buffer overflow conditions while parsing a specific project file, …EPSS 2.1%7.8CVE-2022-21137Omron cx-one stack-based buffer overflow vulnerabilityOmron CX-One Versions 4.60 and prior are vulnerable to a stack-based buffer overflow while processing specific project files, which may allow an atta…EPSS 9.3%7.8CVE-2021-27413Omron cx-one stack-based buffer overflow vulnerabilityOmron CX-One Versions 4.60 and prior, including CX-Server Versions 5.0.29.0 and prior, are vulnerable to a stack-based buffer overflow, which may all…EPSS 10.0%7.8CVE-2020-27257Omron cx-one type confusion vulnerabilityThis vulnerability allows local attackers to execute arbitrary code due to the lack of proper validation of user-supplied data, which can result in a…EPSS 1.8%

Source: NIST National Vulnerability Database (record CVE-2020-27261), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.