CVE-2020-18885Public exploitNetwork attack vector

Authenticated code execution via generated watermark file

Published Aug 20, 2021 · Updated Aug 4, 2024

Command injection in PHPMyWind 5.6 allows remote authenticated users to execute arbitrary PHP through the watermark text-color field. The admin/web_config.php handler writes the field into data/watermark.inc.php without neutralizing PHP syntax, and require_once later interprets the generated file. Administrative access to the settings page is required, after which injected PHP runs with the web application's privileges.

CVSS severityUnavailable
Unscored
EPSS probability3.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in PHPMyWind 5.6 allows remote authenticated users to execute arbitrary PHP through the watermark text-color field. The admin/web_config.php handler writes the field into data/watermark.inc.php without neutralizing PHP syntax, and require_once later interprets the generated file. Administrative access to the settings page is required, after which injected PHP runs with the web application's privileges.

The record

CVE
CVE-2020-18885
Published
Aug 20, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 20, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

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-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
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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