CVE-2023-26793 Memory corruption in n/a
A heap-based buffer overflow in libmodbus allows attackers to execute arbitrary code or cause denial of service via crafted Modbus messages.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-26793?
CVE-2023-26793 is a critical memory corruption vulnerability in n/a, published on 1 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c.
Weakness: CWE-122
Which versions are affected by CVE-2023-26793?
It affects 1 product.
Products include Libmodbus Libmodbus.
How do I fix CVE-2023-26793?
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-2023-26793 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-26793 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-fqv7-fhq2-929v, JLSEC-2026-1251, UBUNTU-CVE-2023-26793.