CVE-2025-36846

CriticalPublic PoCRCE

Published: 21 July 2025

Published

21 July 2025

Modified

12 September 2025

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 0.5015 97.8th percentile

Risk Priority 50 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-36846 is a critical-severity OS Command Injection (CWE-78) vulnerability in Eveo Urve Web Manager. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 2.2% 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 AC-3 (Access Enforcement) and SI-10 (Information Input Validation).

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

Directly mitigates OS command injection by requiring validation and sanitization of the input parameter passed to PHP's shell_exec() function.

SI-2 Flaw Remediation good match

prevent

Requires identification, reporting, and correction of the specific command injection flaw in the /_internal/pc/vpro.php endpoint, such as through vendor patches.

AC-3 Access Enforcement good match

prevent

Enforces logical access controls to prevent unauthenticated remote access to the exposed internal endpoint vulnerable to command injection.

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 →

T1059.004 Unix Shell Execution

Adversaries may abuse Unix shell commands and scripts for execution.

attack.mitre.org →

Why these techniques?

Direct unauthenticated OS command injection in a web endpoint enables remote exploitation of public-facing application (T1190) and arbitrary Unix shell command execution (T1059.004).

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

NVD Description

An issue was discovered in Eveo URVE Web Manager 27.02.2025. The application exposes a /_internal/pc/vpro.php localhost endpoint to unauthenticated users that is vulnerable to OS Command Injection. The endpoint takes an input parameter that is passed directly into the shell_exec()…

function of PHP. NOTE: this can be chained with CVE-2025-36845.

Deeper analysisAI

CVE-2025-36846 is an OS command injection vulnerability (CWE-78) in Eveo URVE Web Manager version 27.02.2025. The affected component is the /_internal/pc/vpro.php endpoint, which is exposed to unauthenticated users despite its localhost designation. This endpoint accepts an input parameter that is passed directly to PHP's shell_exec() function without sanitization, enabling arbitrary command execution on the underlying operating system. The vulnerability has 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 can be chained with CVE-2025-36845.

Remote unauthenticated attackers can exploit this vulnerability over the network with low complexity and no user interaction required. By sending a crafted request to the vulnerable endpoint, attackers can inject and execute arbitrary operating system commands, potentially leading to full system compromise, including high-impact confidentiality, integrity, and availability violations such as data exfiltration, modification, or denial of service.

Advisories detailing the issue are available from SYSS (SYSS-2025-034.txt) and the vendor site at smartoffice.expert/en. Security practitioners should consult these for specific mitigation guidance, such as applying patches if available or implementing network access controls to block unauthorized access to the endpoint.