Local Privilege Escalation Vulnerability in MSP360 Free Backup Software
CVE-2025-12838

7.3HIGH

Key Information:

Vendor

Msp360

Status
Free Backup
Vendor
CVE Published:
23 December 2025

What is CVE-2025-12838?

The vulnerability allows local attackers to exploit the restore functionality of MSP360 Free Backup by creating a junction, leading to arbitrary file creation. An attacker must first run low-privileged code on the system and require admin interaction to escalate privileges, potentially allowing them to execute arbitrary code with SYSTEM-level permissions.

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Affected Version(s)

Free Backup 8.1.0.620

References

https://www.zerodayinitiative.com/advisories/ZDI-25-988/
x_research-advisory

CVSS V3.0

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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