CVE-2020-27466Public exploitNetwork attack vector

Code execution via path-traversing template filename

Published Aug 20, 2021 · Updated Aug 4, 2024

Arbitrary file write in rConfig 3.9.6 and earlier allows remote authenticated users to execute PHP code through the template editor. The ajaxEditTemplate.php handler accepts a fileName containing ../www/ and writes attacker-supplied PHP beneath the web root without constraining the destination path. The endpoint requires an authenticated administrative session; requesting the resulting template executes code as the web-server account.

CVSS severity7.8
High
EPSS probability1.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file write in rConfig 3.9.6 and earlier allows remote authenticated users to execute PHP code through the template editor. The ajaxEditTemplate.php handler accepts a fileName containing ../www/ and writes attacker-supplied PHP beneath the web root without constraining the destination path. The endpoint requires an authenticated administrative session; requesting the resulting template executes code as the web-server account.

The record

CVE
CVE-2020-27466
Published
Aug 20, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, T1505.003
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1505.003Server Software Component: Web Shell

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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