CVE-2022-21137

Code execution via unchecked SDD file parsing

Published Jan 14, 2022 · Updated Apr 16, 2025

Stack-based buffer overflow in OMRON CX-One 4.60 and earlier allows remote attackers to execute code through a crafted SDD project file. The CXDrive module fails to validate user-supplied SDD data before parsing it, causing a read past the end of an allocated buffer. Execution occurs in the current process and requires the target to visit a malicious page or open the malicious file.

CVSS severity7.8
High
EPSS probability9.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack-based buffer overflow in OMRON CX-One 4.60 and earlier allows remote attackers to execute code through a crafted SDD project file. The CXDrive module fails to validate user-supplied SDD data before parsing it, causing a read past the end of an allocated buffer. Execution occurs in the current process and requires the target to visit a malicious page or open the malicious file.

The record

CVE
CVE-2022-21137
Published
Jan 14, 2022
Updated
Apr 16, 2025
Vendor
OMRON Corporation
Product
CX-One
Classifications
CWE-121, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All <=4.60

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OMRON Corporation · CX-Oneversion=All <=4.60

Published CVSS scores

7.8CISA ICS-CERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1204.002User Execution: Malicious File
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo