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CVE-2020-27261

29
FAUCET Score

CVE-2020-27261 describes a stack-based buffer overflow vulnerability in Omron CX-One Version 4.60 and earlier, affecting multiple Omron CX products. This high-severity flaw (CVSS 8.8) allows for remote code execution with high impact on confidentiality, integrity, and availability, requiring user interaction to exploit. Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.60CPE matchmatch criteria
cpe:2.3:a:omron:cx-one:*:*:*:*:*:*:*:*
<= 2.52CPE matchmatch criteria
cpe:2.3:a:omron:cx-position:*:*:*:*:*:*:*:*
<= 2.02CPE matchmatch criteria
cpe:2.3:a:omron:cx-protocol:*:*:*:*:*:*:*:*
<= 5.0.28CPE matchmatch criteria
cpe:2.3:a:omron:cx-server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.61%
Probability of exploitation in next 30 days
EPSS Percentile
93.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0761 is in the 94th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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