CVE-2019-18871Public exploitNetwork attack vector

Authenticated code execution via traversing file upload

Published May 7, 2020 · Updated Aug 5, 2024

Path traversal in debug.php in Blaauw Remote Kiln Control through 3.00r4 allows remote authenticated users to execute arbitrary code. Reached through default.php, the upload handler accepts attacker-controlled traversal paths and writes an uploaded PHP file outside the intended location. A valid application session is required; successful exploitation places a PHP web shell on the kiln-control host and permits arbitrary code execution there.

CVSS severity8.8
High
EPSS probability2.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in debug.php in Blaauw Remote Kiln Control through 3.00r4 allows remote authenticated users to execute arbitrary code. Reached through default.php, the upload handler accepts attacker-controlled traversal paths and writes an uploaded PHP file outside the intended location. A valid application session is required; successful exploitation places a PHP web shell on the kiln-control host and permits arbitrary code execution there.

The record

CVE
CVE-2019-18871
Published
May 7, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 7, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1505.003Web 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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