CVE-2024-4620Public exploitNetwork attack vector

Unauthenticated code execution via upload metadata tampering

Published Jun 7, 2024 · Updated Aug 1, 2024

Code injection in Repute InfoSystems ARForms before 6.6 allows remote attackers to upload executable PHP through a public form. The arf_send_form_data AJAX action trusts attacker-controlled X_FILENAME and types_arr values, renaming an uploaded PHP payload with a .php extension. The target must expose a form containing a file-upload field; successful exploitation writes a web-accessible script that executes in the site's PHP context.

CVSS severity9.8
Critical
EPSS probability3.35%
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 Repute InfoSystems ARForms before 6.6 allows remote attackers to upload executable PHP through a public form. The arf_send_form_data AJAX action trusts attacker-controlled X_FILENAME and types_arr values, renaming an uploaded PHP payload with a .php extension. The target must expose a form containing a file-upload field; successful exploitation writes a web-accessible script that executes in the site's PHP context.

The record

CVE
CVE-2024-4620
Published
Jun 7, 2024
Updated
Aug 1, 2024
Vendor
Repute InfoSystems
Product
ARForms
Classifications
CWE-94, T1505.003, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 7, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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=0 <6.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Repute InfoSystems · ARFormsversion=0 <6.6

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1505.003Web Shell
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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