CVE-2023-31278

Code execution via malformed project-file parsing

Published Jun 6, 2023 · Updated Jan 7, 2025

Out-of-bounds read in Horner Automation Cscape 9.90 SP8 and Cscape EnvisionRV 4.70 allows attackers to execute code via a crafted project file. The project-file parser fails to validate user-supplied HMI data before performing an out-of-bounds read; public sources do not identify the affected function. Exploitation requires a user to open the malicious file, and successful code runs with the privileges of the current process.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Horner Automation Cscape 9.90 SP8 and Cscape EnvisionRV 4.70 allows attackers to execute code via a crafted project file. The project-file parser fails to validate user-supplied HMI data before performing an out-of-bounds read; public sources do not identify the affected function. Exploitation requires a user to open the malicious file, and successful code runs with the privileges of the current process.

The record

CVE
CVE-2023-31278
Published
Jun 6, 2023
Updated
Jan 7, 2025
Vendor
Horner Automation
Product
Cscape EnvisionRV
Classifications
CWE-125, CAPEC-540, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 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=v4.70

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Horner Automation · Cscape EnvisionRVversion=v4.70
Horner Automation · Cscapeversion=v9.90 SP8

Published CVSS scores

7.8ICS-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-125Out-of-bounds Read
CAPEC-540Overread Buffers
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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