CVE-2025-31177 Gnuplot: gnuplot heap-buffer overflow on utf8_copy_one
A heap buffer overflow in Gnuplot's utf8_copy_one function allows attackers to execute arbitrary code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-31177?
CVE-2025-31177 is a medium-severity memory corruption vulnerability in Red Hat Enterprise Linux 6, published on 7 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
gnuplot is affected by a heap buffer overflow at function utf8_copy_one.
Weakness: CWE-122
Which versions are affected by CVE-2025-31177?
It affects 1 product.
Products include Gnuplot Gnuplot.
How do I fix CVE-2025-31177?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-31177 being exploited?
There is no known exploitation of CVE-2025-31177 in the wild and no public exploit code.
Other vulnerabilities in Red Hat Enterprise Linux 6
Sources
Also known as AZL-110388, DEBIAN-CVE-2025-31177, GHSA-xjcf-jhr2-9x97, UBUNTU-CVE-2025-31177.