CVE-2026-28517

CriticalPublic PoCRCEUpdated

Published: 27 February 2026

Published

27 February 2026

Modified

12 May 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 0.3137 96.8th percentile

Risk Priority 38 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-28517 is a critical-severity OS Command Injection (CWE-78) vulnerability in Opendcim Opendcim. 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 3.2% 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 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 and sanitization of the database-retrieved 'fac_Config.dot' parameter before passing it to exec(), directly preventing OS command injection.

SI-2 Flaw Remediation good match

prevent

Mandates timely remediation of the known command injection flaw in report_network_map.php, such as applying the referenced pull request fix.

CM-6 Configuration Settings partial match

prevent

Enforces secure configuration settings for the application, restricting the 'dot' parameter to safe, approved values consistent with operational requirements.

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?

The vulnerability is an unauthenticated OS command injection in a public-facing web application (openDCIM), directly enabling T1190 (Exploit Public-Facing Application) for remote code execution. It facilitates arbitrary shell command execution via PHP exec(), mapping to T1059.004 (Unix Shell).

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

NVD Description

openDCIM version 23.04, through commit 4467e9c4, contains an OS command injection vulnerability in report_network_map.php. The application retrieves the 'dot' configuration parameter from the database and passes it directly to exec() without validation or sanitization. If an attacker can modify the…

fac_Config.dot value, arbitrary commands may be executed in the context of the web server process.

Deeper analysisAI

CVE-2026-28517 is an OS command injection vulnerability (CWE-78) in openDCIM version 23.04 through commit 4467e9c4. The issue occurs in the report_network_map.php component, where the application retrieves the 'dot' configuration parameter from the fac_Config.dot value in the database and passes it directly to the exec() function without validation or sanitization.

An attacker who can modify the fac_Config.dot database value can execute arbitrary OS commands in the context of the web server process. The CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) reflects its high severity, allowing remote exploitation over the network with low complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.

References include a pull request at https://github.com/opendcim/openDCIM/pull/1664 addressing the issue, vulnerable code lines at https://github.com/opendcim/openDCIM/blob/4467e9c4/report_network_map.php#L467 and https://github.com/opendcim/openDCIM/blob/4467e9c4/report_network_map.php#L7, an exploit repository at https://github.com/Chocapikk/opendcim-exploit, and analysis at https://chocapikk.com/posts/2026/opendcim-sqli-to-rce/.