CVE-2020-21648Network attack vector

Unauthenticated file deletion via undisclosed request handling

Published Oct 6, 2021 · Updated Aug 4, 2024

Arbitrary file deletion in admin/cache/manage.php in WDJA CMS 1.5.2 allows remote attackers to delete server files via network requests. The published record names the PHP component but does not disclose the request parameter, validation failure, or filesystem operation that accepts untrusted input. No authentication or user interaction is required; deletion can alter application data or interrupt service without disclosing file contents.

CVSS severity9.1
Critical
EPSS probability1.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file deletion in admin/cache/manage.php in WDJA CMS 1.5.2 allows remote attackers to delete server files via network requests. The published record names the PHP component but does not disclose the request parameter, validation failure, or filesystem operation that accepts untrusted input. No authentication or user interaction is required; deletion can alter application data or interrupt service without disclosing file contents.

The record

CVE
CVE-2020-21648
Published
Oct 6, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1070.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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

6.4NVDAV:N/AC:L/Au:N/C:N/I:P/A:P
9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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 exploitUnconfirmed

Weakness, pattern, technique

T1070.004File Deletion

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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