Local Buffer Overflow Vulnerability in a-Mac Address Change 5.4 by Paqtool
CVE-2019-25658

6.8MEDIUM

Key Information:

Vendor

Amac

Status
Mac Address Change
Vendor
CVE Published:
5 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-25658?

The a-Mac Address Change 5.4 application has a local buffer overflow vulnerability that can be exploited by local attackers to induce a denial of service (DoS). By entering oversized inputs—specifically, 212 bytes—into the 'Your Name', 'Your Company', or 'Register Code' fields in the registration form, an attacker can trigger a crash of the application when the Register button is clicked. This allows malicious users to disrupt the normal functioning of the software, highlighting the importance of input validation in application security.

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Affected Version(s)

Mac Address Change 5.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2019-25658 - Proof of Concept

References

https://www.exploit-db.com/exploits/46292
exploit
http://amac.paqtool.com/
product
https://www.vulncheck.com/advisories/a-mac-address-change...
third-party-advisory

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Rafael Pedrero
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