What is the CVSS score of CVE-2025-53394?

CVE-2025-53394 has a CVSS 3.1 base score of 7.7 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Paramount Macrium Reflect are affected by CVE-2025-53394?

Organizations using Paramount Macrium Reflect through 2025-06-26 face notable risk from CVE-2025-53394, a DLL hijacking vulnerability rated CVSS 7.7.

How to fix or mitigate CVE-2025-53394?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Paramount Macrium Reflect CVE-2025-53394

HIGH

Uncontrolled Search Path Element (CWE-427)

2025-08-04 cve@mitre.org

RCE

7.7

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.7 HIGH

AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:05 vuln.today

CVE Published

Aug 04, 2025 - 19:15 nvd

HIGH 7.7

DescriptionCVE.org

Paramount Macrium Reflect through 2025-06-26 allows attackers to execute arbitrary code with administrator privileges via a crafted .mrimgx or .mrbax backup file and a renamed executable placed in the same directory. When a user with administrative privileges opens the crafted backup file and proceeds to mount it, Reflect launches the renamed executable (e.g., explorer.exe), which is under attacker control. This occurs because of insufficient validation of companion files referenced during backup mounting.

AnalysisAI

Technical ContextAI

This vulnerability is classified under CWE-427. Paramount Macrium Reflect through 2025-06-26 allows attackers to execute arbitrary code with administrator privileges via a crafted .mrimgx or .mrbax backup file and a renamed executable placed in the same directory. When a user with administrative privileges opens the crafted backup file and proceeds to mount it, Reflect launches the renamed executable (e.g., explorer.exe), which is under attacker control. This occurs because of insufficient validation of companion files referenced during backup mounting. Version information: through 2025.

Affected ProductsAI

See vendor advisory for affected versions.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.