CVE-2025-11947 bftpd Configuration File options.c expand_groups heap-based overflow
A heap-based buffer overflow in bftpd's configuration handler allows local attackers to potentially execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-11947?
CVE-2025-11947 is a low-severity memory corruption vulnerability in bftpd, published on 19 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A weakness has been identified in bftpd up to 6.2. Impacted is the function expand_groups of the file options.c of the component Configuration File Handler. Executing a manipulation can lead to heap-based buffer overflow. It is possible to launch the attack on the local host. Attacks of this nature are highly complex. The exploitability is considered difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-11947?
How do I fix CVE-2025-11947?
No fix has been published for CVE-2025-11947 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-2025-11947 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11947 exists.
Sources
Also known as GHSA-rw23-m73v-8343.