CVE-2025-26469

CriticalPublic PoCLPE

Published: 28 July 2025

Published

28 July 2025

Modified

03 November 2025

KEV Added

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Patch

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CVSS Score 9.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Score 0.0010 27.3th percentile

Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-26469 is a critical-severity Incorrect Permission Assignment for Critical Resource (CWE-732) vulnerability in Meddream Pacs Server. Its CVSS base score is 9.3 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Credentials in Registry (T1214); ranked at the 27.3th 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-3 (Access Enforcement) and AC-6 (Least Privilege).

Threat & Defense at a Glance

What attackers do: exploitation maps to Credentials in Registry (T1214) 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

CM-6 Configuration Settings good match

prevent

CM-6 mandates establishing and enforcing restrictive configuration settings on system components like registry keys, directly countering the incorrect default permissions that expose decryptable credentials.

AC-6 Least Privilege good match

prevent

AC-6 applies least privilege to restrict unprivileged local access to sensitive registry keys storing credentials, preventing exploitation by local attackers.

AC-3 Access Enforcement good match

prevent

AC-3 enforces approved access authorizations on system resources such as registry keys, blocking unauthorized reads of configuration-stored credentials.

MITRE ATT&CK Enterprise TechniquesAI

T1214 Credentials in Registry Credential Access

The Windows Registry stores configuration information that can be used by the system or other programs.

attack.mitre.org →

T1552.002 Credentials in Registry Credential Access

Adversaries may search the Registry on compromised systems for insecurely stored credentials.

attack.mitre.org →

Why these techniques?

Improper registry permissions directly expose stored credentials for local decryption/access without auth.

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

NVD Description

An incorrect default permissions vulnerability exists in the CServerSettings::SetRegistryValues functionality of MedDream PACS Premium 7.3.3.840. A specially crafted application can decrypt credentials stored in a configuration-related registry key. An attacker can execute a malicious script or application to exploit this…

vulnerability.

Deeper analysisAI

CVE-2025-26469, published on 2025-07-28, is an incorrect default permissions vulnerability (CWE-732) in the CServerSettings::SetRegistryValues functionality of MedDream PACS Premium version 7.3.3.840. The issue stems from improper registry key permissions, allowing a specially crafted application to decrypt credentials stored in a configuration-related registry key. It carries a CVSS v3.1 base score of 9.3 (AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H), indicating critical severity due to low attack complexity, no privileges or user interaction required, and high impacts across confidentiality, integrity, and availability with scope change.

A local attacker can exploit this vulnerability by executing a malicious script or application on the affected system. No authentication or elevated privileges are needed, enabling unprivileged users with local access—such as via a compromised endpoint or physical access—to decrypt sensitive credentials. Exploitation grants high-level access to configuration data, potentially facilitating further compromise of the MedDream PACS environment.

The primary advisory reference is the Cisco Talos Intelligence report at https://talosintelligence.com/vulnerability_reports/TALOS-2025-2154, which provides additional technical details on the vulnerability.