CVE-2020-35339Public exploitNetwork attack vector

Remote code execution via unsafe configuration write

Published Feb 17, 2021 · Updated Aug 4, 2024

Code injection in 74cms 5.0.1 allows remote attackers to execute PHP code and control the application server through a crafted site_domain value. The configuration edit action passes the site_domain request value through trim, var_export, and stripslashes before update_config writes executable PHP to url.php. No authentication or user interaction is required, and successful injection executes with the web-server process's permissions.

CVSS severity9.8
Critical
EPSS probability4.41%
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 74cms 5.0.1 allows remote attackers to execute PHP code and control the application server through a crafted site_domain value. The configuration edit action passes the site_domain request value through trim, var_export, and stripslashes before update_config writes executable PHP to url.php. No authentication or user interaction is required, and successful injection executes with the web-server process's permissions.

The record

CVE
CVE-2020-35339
Published
Feb 17, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 17, 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

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS: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')
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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