CVE-2019-25658 Amac CVE debrief

Who should care

Users of a-Mac Address Change 5.4 should apply patches or mitigations to prevent local denial of service attacks. The vulnerability affects local users who can crash the application by supplying oversized input to registration form fields. Security teams and vulnerability management teams should review the official advisory and CVE record to assess the vulnerability. Operators and platform administrators should review compensating controls for exposed systems while remediation is scheduled and verified.

Technical summary

The a-Mac Address Change 5.4 application is vulnerable to a local buffer overflow. An attacker can paste 212 bytes of data into the 'Your Name', 'Your Company', or 'Register Code' fields and click the Register button to trigger a denial of service crash. The CVSS score for this vulnerability is 6.8, indicating a medium severity. The vulnerability affects the a-Mac Address Change 5.4 application, and local attackers can exploit it to crash the application. The CVE record does not provide additional details about the vulnerability, and the NVD entry does not offer further information.

Defensive priority

Apply patches or mitigations to prevent local denial of service attacks. Review compensating controls for exposed systems while remediation is scheduled and verified. Implement input validation and sanitization for registration form fields. Monitor for suspicious activity and implement logging and alerting.

Recommended defensive actions

• Apply patches or updates provided by the vendor
• Implement input validation and sanitization for registration form fields
• Monitor for suspicious activity and implement logging and alerting
• Consider implementing compensating controls such as limiting access to the application
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-04-05T21:16:42.530Z and has not been modified since then. The NVD entry is currently Deferred. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The CVE record does not provide additional details about the vulnerability, and the NVD entry does not offer further information. To assess the vulnerability, defenders should review the official advisory and CVE record. The vulnerability affects a-Mac Address Change 5.4, and local attackers can crash the application by supplying oversized input to registration form fields.

Official resources