CVE-2024-50420Network attack vector

Unauthenticated server code execution

Published Oct 29, 2024 · Updated May 11, 2026

Unrestricted file upload in QuomodoSoft aDirectory 1.3 and earlier allows remote attackers to upload a web shell to the server. The public CNA record and linked advisory do not identify the affected upload handler or disclose which server-side file-type validation is missing or bypassed. No authentication or user interaction is required, and an uploaded executable script runs with web-server privileges, enabling arbitrary code execution.

CVSS severity10.0
Critical
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in QuomodoSoft aDirectory 1.3 and earlier allows remote attackers to upload a web shell to the server. The public CNA record and linked advisory do not identify the affected upload handler or disclose which server-side file-type validation is missing or bypassed. No authentication or user interaction is required, and an uploaded executable script runs with web-server privileges, enabling arbitrary code execution.

The record

CVE
CVE-2024-50420
Published
Oct 29, 2024
Updated
May 11, 2026
Vendor
QuomodoSoft
Product
aDirectory
Classifications
CWE-434, CAPEC-650, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 29, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.3
  2. Affected versionversion=0 <=1.3 changes=[{"at":"1.3.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

QuomodoSoft · aDirectoryversion=0 <=1.3; version=0 <=1.3 changes=[{"at":"1.3.1","status":"unaffected"}]

Published CVSS scores

10.0PatchstackCVSS:3.1/AV:N/AC:L/PR:N/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-650Upload a Web Shell to a Web Server
T1505.003Server Software Component: Web Shell

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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