CVE-2025-56015

HighPublic PoC

Published: 07 April 2026

Published

07 April 2026

Modified

10 April 2026

KEV Added

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Patch

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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Score 0.0004 13.0th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-56015 is a high-severity Improper Access Control (CWE-284) vulnerability in Genieacs Genieacs. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 13.0th percentile by exploit likelihood (below the median); 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-14 (Permitted Actions Without Identification or Authentication) and AC-3 (Access Enforcement).

Threat & Defense at a Glance

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

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

AC-3 Access Enforcement good match

prevent

AC-3 requires the system to enforce approved authorizations for logical access to resources, directly preventing unauthorized access to the vulnerable NBI API endpoint.

IA-8 Identification and Authentication (Non-organizational Users) good match

prevent

IA-8 mandates identification and authentication for non-organizational users or processes, blocking remote unauthenticated attackers from exploiting the API.

AC-14 Permitted Actions Without Identification or Authentication good match

prevent

AC-14 explicitly defines and limits actions permitted without identification or authentication, ensuring sensitive API endpoints require proper credentials.

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 →

Why these techniques?

Direct unauthenticated access to public NBI API endpoint enables exploitation of public-facing application for initial unauthorized data access.

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

NVD Description

In GenieACS 1.2.13, an unauthenticated access vulnerability exists in the NBI API endpoint.

Deeper analysisAI

CVE-2025-56015 is an unauthenticated access vulnerability in the NBI API endpoint of GenieACS version 1.2.13. This flaw, linked to CWE-284 (Improper Access Control), was published on 2026-04-07 and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), highlighting high severity driven by network accessibility, low complexity, no required privileges or user interaction, and significant confidentiality impact.

Remote attackers without authentication can exploit the vulnerable NBI API endpoint to achieve unauthorized access, resulting in high confidentiality impact such as disclosure of sensitive data hosted by the affected GenieACS instance.

Mitigation details and related advisories are available in the referenced repositories at https://github.com/e1st/CVE-2025-56015 and https://github.com/genieacs/genieacs/.