Overview
CVE-2025-54907 is a severe vulnerability affecting Microsoft Office Visio. The bug, a heap-based buffer overflow, has the potential to compromise system security and lead to unauthorized data leakage. Any organization or individual using the affected versions of Microsoft Office Visio need to be aware of this vulnerability and take the necessary steps to mitigate it.
Vulnerability Summary
CVE ID: CVE-2025-54907
Severity: High (7.8 CVSS score)
Attack Vector: Local
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
Microsoft Office Visio | All versions prior to the patched release
How the Exploit Works
The vulnerability comes about due to a heap-based buffer overflow in Microsoft Office Visio. An attacker can exploit this by persuading a user to open a specially crafted file in an affected version of Microsoft Office Visio. When the file is opened, it triggers the buffer overflow, potentially allowing the attacker to execute arbitrary code locally on the system.
Conceptual Example Code
Below is a sample code demonstrating how the vulnerability might be exploited. This is a conceptual example, not actual exploitative code.
def exploit():
# Create a specially crafted file
file = create_malicious_file()
# Send the file to the target system
send_file_to_target(file)
# The target system opens the file in Visio, triggering the buffer overflow
trigger_overflow(file)Please note that actual exploitation will require more sophisticated techniques and exploitation code. The above example is provided for conceptual understanding only.
Mitigation Guidance
The most effective remedy for this vulnerability is to apply the patch provided by the vendor. If the patch cannot be immediately applied, alternatives such as employing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation. However, these should not be seen as a long-term solution, and the vendor’s patch should be applied as soon as possible.
