CVE-2025-67433 Memory corruption in n/a
Attackers can cause a Denial of Service in Open TFTP Server MultiThreaded by sending a crafted DATA packet that triggers a heap buffer overflow.
- 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-2025-67433?
CVE-2025-67433 is a high-severity memory corruption vulnerability in n/a, published on 12 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A heap buffer overflow in the processRequest function of Open TFTP Server MultiThreaded v1.7 allows attackers to cause a Denial of Service (DoS) via a crafted DATA packet.
Weakness: CWE-122
Which versions are affected by CVE-2025-67433?
How do I fix CVE-2025-67433?
No fix has been published for CVE-2025-67433 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-2025-67433 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67433 exists.
Sources
Also known as GHSA-q6f4-2qxx-8cww.