CVE-2023-5964Network attack vector

SYSTEM code execution via unvalidated message parameters

Published Nov 6, 2023 · Updated Jun 12, 2025

Code injection in 1E Platform's DisplayMessage instruction through 23 allows remote authenticated users to execute code as SYSTEM. The instruction accepts crafted Caption or Message values without validating them before the Windows client processes the resulting display request. Reachability requires permission to run the instruction, and successful exploitation grants SYSTEM-level code execution on Windows clients.

CVSS severity9.9
Critical
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in 1E Platform's DisplayMessage instruction through 23 allows remote authenticated users to execute code as SYSTEM. The instruction accepts crafted Caption or Message values without validating them before the Windows client processes the resulting display request. Reachability requires permission to run the instruction, and successful exploitation grants SYSTEM-level code execution on Windows clients.

The record

CVE
CVE-2023-5964
Published
Nov 6, 2023
Updated
Jun 12, 2025
Vendor
1E
Product
1E Platform
Classifications
CWE-20
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 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=0 <=23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

1E · 1E Platformversion=0 <=23

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
9.91E LimitedCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

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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