Vulnerability · Published Dec 15, 2025 · Assigned by VulnCheck
CVE-2023-53879NVClient 5.0 Stack Buffer Overflow Vulnerability via User Configuration
Medium 6.7
In plain English
A medium-severity stack buffer overflow in NVClient from neonguvenlik. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Severity (CVSS 4.0)6.7Medium
Exploit odds (30 days)0.2%top 87.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| neonguvenlik | NVClient | 5.0 |
Weakness: CWE-121 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
- ExploitDB-51700 exploit
- NVClient Product Documentation product
- VulnCheck Advisory: NVClient 5.0 Stack Buffer Overflow Vulnerability via User Configuration third-party-advisory