CVE-2023-22277

Arbitrary code execution via unchecked parser object

Published Aug 3, 2023 · Updated Oct 17, 2024

Use-after-free in OMRON CX-Programmer 9.79 and earlier allows remote attackers to execute code through a crafted CXP file. The CXP parser operates on an object without first validating that the object still exists, allowing freed memory to be dereferenced. Exploitation requires a user to open the malicious file; resulting code runs in the current process, and the same flaw can disclose information.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in OMRON CX-Programmer 9.79 and earlier allows remote attackers to execute code through a crafted CXP file. The CXP parser operates on an object without first validating that the object still exists, allowing freed memory to be dereferenced. Exploitation requires a user to open the malicious file; resulting code runs in the current process, and the same flaw can disclose information.

The record

CVE
CVE-2023-22277
Published
Aug 3, 2023
Updated
Oct 17, 2024
Vendor
OMRON Corporation
Product
CX-Programmer
Classifications
CWE-416, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2024Record 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=Ver.9.79 and earlier

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

OMRON Corporation · CX-Programmerversion=Ver.9.79 and earlier

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8JPCERT/CCCVSS: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-416Use After Free
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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