CVE-2022-26419

Code execution via unchecked NCI data copies

Published Apr 1, 2022 · Updated Apr 16, 2025

Stack-based buffer overflows in OMRON CX-Position 2.5.3 and earlier allow attackers to execute arbitrary code through a crafted NCI project file. The NCI parser copies user-supplied data into fixed-length stack buffers without first validating its length. Attackers must convince a user to open the file; no authentication is required, and resulting code runs in the current process.

CVSS severity7.8
High
EPSS probability2.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflows in OMRON CX-Position 2.5.3 and earlier allow attackers to execute arbitrary code through a crafted NCI project file. The NCI parser copies user-supplied data into fixed-length stack buffers without first validating its length. Attackers must convince a user to open the file; no authentication is required, and resulting code runs in the current process.

The record

CVE
CVE-2022-26419
Published
Apr 1, 2022
Updated
Apr 16, 2025
Vendor
OMRON Corporation
Product
CX-Position
Classifications
CWE-121, CWE-787, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <=2.5.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OMRON Corporation · CX-Positionversion=unspecified <=2.5.3

Published CVSS scores

7.8ICS-CERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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
CWE-787Out-of-bounds Write
T1204.002User Execution: Malicious File

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

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Your stack

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