CVE-2023-43683 Memory corruption in n/a
An attacker can trigger a stack buffer overflow via integer underflow in Malwarebytes, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-43683?
CVE-2023-43683 is a medium-severity memory corruption vulnerability in n/a, published on 14 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Malwarebytes 4.6.14.326 and before 5.1.5.116 (and Nebula 2020-10-21 and later). A Stack buffer out-of-bounds access exists because of an integer underflow when handling newline characters.
Which versions are affected by CVE-2023-43683?
How do I fix CVE-2023-43683?
No fix has been published for CVE-2023-43683 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-2023-43683 being exploited?
There is no known exploitation of CVE-2023-43683 in the wild and no public exploit code.
Sources
Also known as GHSA-f6hv-c34j-xjph.