CVE-2021-32538Network attack vector

Unauthenticated code execution via unrestricted file upload

Published Jul 7, 2021 · Updated Sep 17, 2024

Unrestricted file upload in Artware CMS through 2021/1/8 allows remote attackers to execute arbitrary code via the image-upload function. The function does not filter uploaded file types, so unauthenticated requests can place executable content on the server. Exploitation requires network access only and can compromise confidentiality, integrity, and availability through unrestricted code execution.

CVSS severity9.8
Critical
EPSS probability2.01%
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 Artware CMS through 2021/1/8 allows remote attackers to execute arbitrary code via the image-upload function. The function does not filter uploaded file types, so unauthenticated requests can place executable content on the server. Exploitation requires network access only and can compromise confidentiality, integrity, and availability through unrestricted code execution.

The record

CVE
CVE-2021-32538
Published
Jul 7, 2021
Updated
Sep 17, 2024
Vendor
Artware CMS Project
Product
Artware CMS
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 7, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=unspecified <=2021/1/8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Artware CMS Project · Artware CMSversion=unspecified <=2021/1/8

Published CVSS scores

7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8TWCERT/CCCVSS: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 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
T1505.003Web 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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