CVE-2023-53879 NVClient 5.0 Stack Buffer Overflow Vulnerability via User Configuration
Attackers can crash NVClient by pasting a crafted payload into the contact field, causing a stack buffer overflow and 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-2023-53879?
CVE-2023-53879 is a medium-severity memory corruption vulnerability in neonguvenlik NVClient, published on 15 Dec 2025. 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
NVClient 5.0 contains a stack buffer overflow vulnerability in the user configuration contact field that allows attackers to crash the application. Attackers can overwrite 846 bytes of memory by pasting a crafted payload into the contact box, causing a denial of service condition.
Which versions are affected by CVE-2023-53879?
It affects 1 product.
Products include Eyemaxsystems Nvclient.
How do I fix CVE-2023-53879?
No fix has been published for CVE-2023-53879 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-53879 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53879 exists.
Sources
Also known as GHSA-m8m6-q237-vh9r.