CVE-2025-53395: n/a
Source CVE Database V5
Not known to be exploited · CVSS 7.7 High.
Data as of 26 Oct 2026, 07:57 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:H/S:C/UI:RExploitation evidence
Disclosed: evidence found.
CVE published 4 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
AI-suggested
1. Restrict local administrative privileges to only trusted personnel and minimize the number of users with such rights to reduce the attack surface. 2. Educate users with administrative access to avoid opening backup files (.mrimgx) from untrusted or unknown sources. 3. Implement application whitelisting or code integrity policies to prevent unauthorized DLLs from loading in the Macrium Reflect directories. 4. Monitor directories where backups are stored for unexpected or suspicious DLL files, especially VSSSvr.dll, and establish alerts for changes. 5. Use endpoint detection and response (EDR) tools to detect anomalous DLL loading or process behaviors related to ReflectMonitor.exe. 6. Isolate backup storage locations with strict access controls and consider mounting backups in controlled environments or virtual machines to limit impact. 7. Regularly review and audit backup and recovery procedures to ensure they are resilient against tampering. 8. Stay updated with vendor advisories and apply patches promptly once available. 9. Consider deploying application sandboxing or containerization for backup mounting operations to contain potential exploits.
Description
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.