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CVE-2025-12838

7.3 · HIGH

MSP360 Free Backup Link Following Local Privilege Escalation Vulnerability.

Published Dec 23, 2025CWE-59EPSS 0.18%

Overview

CVE-2025-12838 is a high-severity vulnerability. It was published on December 23, 2025 and has a CVSS 3.0 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.3, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

MSP360 Free Backup Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of MSP360 Free Backup. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. User interaction on the part of an administrator is needed additionally.

The specific flaw exists within the restore functionality. By creating a junction, an attacker can abuse the service to create arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-27245.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.zerodayinitiative.com/advisories/ZDI-25-988/

How CyberStrike helps

Frequently asked questions

What is CVE-2025-12838?

CVE-2025-12838 is a high-severity vulnerability. It was published on December 23, 2025 and has a CVSS 3.0 base score of 7.3 (HIGH).

How severe is CVE-2025-12838?

This vulnerability has a CVSS 3.0 base score of 7.3, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-12838?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-12838?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-12838 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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