Paramount Macrium Reflect up to 2025-06-26 ReflectMonitor.exe untrusted search path

Summaryinfo

A vulnerability, which was classified as problematic, was found in Paramount Macrium Reflect up to 2025-06-26. This impacts an unknown function in the library VSSSvr.dll of the file ReflectMonitor.exe. Executing a manipulation can lead to untrusted search path. This vulnerability is tracked as CVE-2025-53395. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability has been found in Paramount Macrium Reflect up to 2025-06-26 and classified as critical. This vulnerability affects some unknown functionality in the library VSSSvr.dll of the file ReflectMonitor.exe. The manipulation with an unknown input leads to a untrusted search path vulnerability. The CWE definition for the vulnerability is CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Paramount Macrium Reflect through 2025-06-26 allows local attackers to execute arbitrary code with administrator privileges via a crafted .mrimgx backup file and a malicious VSSSvr.dll located in the same directory. When a user with administrative privileges mounts a backup by opening the .mrimgx file, Reflect loads the attacker's VSSSvr.dll after the mount completes. This occurs because of untrusted DLL search path behavior in ReflectMonitor.exe.

This vulnerability was named CVE-2025-53395 since 06/29/2025. The exploitation appears to be difficult. The attack needs to be approached locally. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/06/2025). The MITRE ATT&CK project declares the attack technique as T1574.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Paramount

Name

• Macrium Reflect

Version

• 2025-06-26

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion