CVE-2025-26469
Published: 28 July 2025
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 (T1552.002); ranked at the 40.2th 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).
Deeper analysis
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.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-22910
Vulnerability details
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…
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vulnerability.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Improper registry permissions directly expose stored credentials for local decryption/access without auth.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
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 applies least privilege to restrict unprivileged local access to sensitive registry keys storing credentials, preventing exploitation by local attackers.
AC-3 enforces approved access authorizations on system resources such as registry keys, blocking unauthorized reads of configuration-stored credentials.