CVE-2019-25361 Ayukov NFTP client 1.71 - 'SYST' Buffer Overflow
Remote attackers can execute arbitrary code on Ayukov NFTP client via a buffer overflow in SYST command handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-25361?
CVE-2019-25361 is a high-severity memory corruption vulnerability in Ayukov NFTP client, published on 18 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Ayukov NFTP client 1.71 contains a buffer overflow vulnerability in the SYST command handling that allows remote attackers to execute arbitrary code. Attackers can send a specially crafted SYST command with oversized payload to trigger a buffer overflow and execute a bind shell on port 5150.
Weakness: CWE-121
Which versions are affected by CVE-2019-25361?
How do I fix CVE-2019-25361?
No fix has been published for CVE-2019-25361 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-2019-25361 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25361 exists.
Sources
Also known as GHSA-64gc-33j4-53f4.