CVE-2019-25647

HighPublic PoC

Published: 24 March 2026

Published

24 March 2026

Modified

25 March 2026

KEV Added

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Patch

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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0029 52.6th percentile

Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2019-25647 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Phreesoft Phreebookserp. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 47.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Requires validation of information inputs like uploaded files to block arbitrary PHP uploads that bypass extension controls.

SI-3 Malicious Code Protection good match

preventdetect

Deploys malicious code protection at system entry points such as the image manager to scan and eradicate uploaded PHP shells or backdoors.

SI-2 Flaw Remediation good match

prevent

Directly mitigates the image manager RCE flaw through timely identification, testing, and deployment of patches for PhreeBooks ERP.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1505.003 Web Shell Persistence

Adversaries may backdoor web servers with web shells to establish persistent access to systems.

attack.mitre.org →

Why these techniques?

The vulnerability enables exploitation of a public-facing web application via unrestricted file upload in the image manager (T1190) and facilitates uploading/executing PHP web shells for RCE (T1100).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

PhreeBooks ERP 5.2.3 contains a remote code execution vulnerability in the image manager that allows authenticated attackers to upload and execute arbitrary PHP files by bypassing file extension controls. Attackers can upload malicious PHP files through the image manager endpoint…

and execute them to establish reverse shell connections and execute system commands.

Deeper analysisAI

CVE-2019-25647 is a remote code execution vulnerability affecting PhreeBooks ERP version 5.2.3, specifically in the image manager component. The flaw allows authenticated attackers to upload arbitrary PHP files by bypassing file extension controls, enabling subsequent execution of malicious code. It is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) and carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its network accessibility, low attack complexity, and potential for complete confidentiality, integrity, and availability impacts.

Authenticated attackers with low privileges can exploit this vulnerability remotely by accessing the image manager endpoint to upload PHP shells or backdoors disguised with allowable extensions. Successful exploitation grants attackers the ability to execute arbitrary system commands, establish reverse shell connections, and potentially achieve full server compromise, as the uploaded files can be triggered directly on the server.

References include a proof-of-concept exploit on Exploit-DB (46645), a detailed advisory from Vulncheck on the PhreeBooks ERP remote code execution via image manager, and project sites such as SourceForge and PhreeSoft, which may provide additional context or updates on patches, though specific mitigation steps are outlined in those advisories.