CVE-2023-30223Public exploitNetwork attack vector

Unauthenticated account modification via pre-login TCP injection

Published Jun 16, 2023 · Updated Aug 2, 2024

Broken authentication in 4D SAS 4D Server 17, 18, and 19 R7 and earlier allows remote attackers to perform arbitrary actions via crafted TCP packets. The server accepts nonessential requests before authentication and processes packets injected into a client-server TCP connection as authorized client actions. Exploitation requires the server private key and the built-in password system; demonstrated consequences include changing passwords and creating users.

CVSS severity7.5
High
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken authentication in 4D SAS 4D Server 17, 18, and 19 R7 and earlier allows remote attackers to perform arbitrary actions via crafted TCP packets. The server accepts nonessential requests before authentication and processes packets injected into a client-server TCP connection as authorized client actions. Exploitation requires the server private key and the built-in password system; demonstrated consequences include changing passwords and creating users.

The record

CVE
CVE-2023-30223
Published
Jun 16, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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.

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No observations available

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

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

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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