CVE-2025-65783

Critical

Published: 13 January 2026

Published

13 January 2026

Modified

05 February 2026

KEV Added

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Patch

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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0012 30.1th percentile

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

Summary

CVE-2025-65783 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Hubert Hub. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 30.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

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

SI-10 directly prevents arbitrary file uploads by validating the type and content of uploaded files, such as crafted PDFs, to ensure they conform to expected formats.

SI-2 Flaw Remediation good match

prevent

SI-2 mandates identification and correction of the specific flaw in the /utils/uploadFile component enabling unrestricted dangerous file uploads.

SI-3 Malicious Code Protection partial match

preventdetect

SI-3 scans uploaded files for malicious code, mitigating execution risks from crafted PDFs that evade basic validation.

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 →

T1100 Web Shell Persistence

A Web shell is a Web script that is placed on an openly accessible Web server to allow an adversary to use the Web server as a gateway into a network.

attack.mitre.org →

Why these techniques?

Arbitrary file upload (CWE-434) in public-facing web component directly enables remote unauthenticated attackers to upload/execute malicious files (e.g., web shell) for code execution.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

An arbitrary file upload vulnerability in the /utils/uploadFile component of Hubert Imoveis e Administracao Ltda Hub v2.0 1.27.3 allows attackers to execute arbitrary code via uploading a crafted PDF file.

Deeper analysisAI

CVE-2025-65783 is an arbitrary file upload vulnerability affecting the /utils/uploadFile component in Hubert Imoveis e Administracao Ltda Hub v2.0 1.27.3. Published on 2026-01-13, it enables attackers to execute arbitrary code by uploading a crafted PDF file. The vulnerability carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) and is associated with CWE-434 (Unrestricted Upload of File with Dangerous Type).

Remote attackers require no privileges or user interaction to exploit this vulnerability over the network with low complexity. Successful exploitation grants high-impact access to confidentiality, integrity, and availability, allowing arbitrary code execution on the affected system.

Advisories and further details are available in the provided references, including http://hub.com, http://hubert.com, and https://github.com/carlos-artmann/vulnerability-research/tree/main/CVE-2025-65783. Security practitioners should consult these sources for mitigation guidance and patch information.