CVE-2023-5259Public exploitNetwork attack vector

Service interruption via protected administrator deletion

Published Sep 29, 2023 · Updated Sep 23, 2024

Improper authorization in ForU CMS allows remote authenticated users to delete the primary administrator via a crafted del parameter. In /admin/cms_admin.php, the deletion check accepts a decimal-like value such as 1.2, while intval() converts it to protected account ID 1 before deletion. Administrative access is required, and deleting that account makes all CMS functions unavailable.

CVSS severity2.7
Low
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in ForU CMS allows remote authenticated users to delete the primary administrator via a crafted del parameter. In /admin/cms_admin.php, the deletion check accepts a decimal-like value such as 1.2, while intval() converts it to protected account ID 1 before deletion. Administrative access is required, and deleting that account makes all CMS functions unavailable.

The record

CVE
CVE-2023-5259
Published
Sep 29, 2023
Updated
Sep 23, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-404, T1531
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
3.3VulDBAV:N/AC:L/Au:M/C:N/I:N/A:P
2.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1531Account Access Removal

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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