CVE-2025-54351 Memory corruption in iperf3
A buffer overflow in iperf3 allows attackers to execute code or cause denial of service when the skip-rx-copy option is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-54351?
CVE-2025-54351 is a high-severity memory corruption vulnerability in ES iperf3, published on 3 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).
Weakness: CWE-420
Which versions are affected by CVE-2025-54351?
It affects 1 product.
Products include Es Iperf3.
How do I fix CVE-2025-54351?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-54351 being exploited?
There is no known exploitation of CVE-2025-54351 in the wild and no public exploit code.
Other vulnerabilities in ES iperf3
Sources
Also known as ALPINE-CVE-2025-54351, BELL-CVE-2025-54351, GHSA-xjwm-4pfw-49g2, UBUNTU-CVE-2025-54351.