CVE-2025-64391
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Vulnerability report for CVE-2025-64391, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-07

Last updated on: 2026-10-07

Assigner: HackerOne

Description

This vulnerability in Veeam Agent for Microsoft Windows allows a low-privileged local user to make the agent write files to arbitrary locations when an administrator installs it.

CVSS Scores

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Meta Information

Published
2026-10-07
Last Modified
2026-10-07
Generated
2026-10-19
AI Q&A
2026-10-07
EPSS Evaluated
2026-10-18
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Veeam Agent for Windows 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-1386 The product opens a file or directory, but it does not properly prevent the name from being associated with a junction or mount point to a destination that is outside of the intended control sphere.

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Executive Summary

This vulnerability in Veeam Agent for Microsoft Windows allows a low-privileged local user to make the agent write files to arbitrary locations when an administrator installs it.

Detection Guidance

This CVE does not provide specific detection methods or commands. Check Veeam Agent for Windows logs for unusual file writes or unauthorized file creation in sensitive directories. Review system logs for unexpected changes in file permissions or locations.

Impact Analysis

A low-privileged attacker could exploit this to write malicious files to sensitive system locations, potentially leading to privilege escalation or system compromise.

Compliance Impact

The vulnerability allows low-privileged local users to write files to arbitrary locations during agent installation, which could lead to unauthorized data access or manipulation. This may impact compliance with GDPR by risking unauthorized data processing or exposure, and with HIPAA by potentially compromising protected health information integrity or confidentiality.

Mitigation Strategies

Update Veeam Agent for Microsoft Windows to the latest version to address the vulnerability. Ensure administrators install the agent with proper permissions to prevent unauthorized file writes.

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