CVE-2019-25658 a-Mac Address Change 5.4 Local Buffer Overflow DoS
Local attackers can crash the application by pasting oversized data into registration form fields, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-25658?
CVE-2019-25658 is a medium-severity denial of service vulnerability in Amac Mac Address Change, published on 5 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
a-Mac Address Change 5.4 contains a local buffer overflow vulnerability that allows local attackers to crash the application by supplying oversized input to registration form fields. Attackers 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.
Weakness: CWE-787
Which versions are affected by CVE-2019-25658?
How do I fix CVE-2019-25658?
No fix has been published for CVE-2019-25658 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-25658 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25658 exists.
Sources
Also known as GHSA-4fvm-5vr9-wq7p.