CVE-2025-53394

Paramount Macrium Reflect through 2025-06-26 allows attackers to execute arbitrary code with administrator privileges via a crafted .mrimgx or .mrbax backup…

High · published August 4, 2025

CVSS v3.1
7.7
EPSS
0%
Percentile
3.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:H/S:C/UI:R
CVSS v4.0
Not supplied
EPSS
0.00149 · 3.7th percentile
Published
2025-08-04T00:00Z
EPSS history
Timeline
  • 04 AUG 00:00Z
    Paramount Macrium Reflect through 2025-06-26 allows attackers to execute arbitrary code with administrator privileges via a crafted .mrimgx or .mrbax backup…
    cvelistv5