CVE-2024-8938 Memory corruption in Modicon M340 CPU (part numbers BMXP34*)
A memory corruption vulnerability in Schneider Electric PLCs allows arbitrary code execution via a crafted Modbus request after a Man-In-The-Middle attack.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-8938?
CVE-2024-8938 is a critical memory corruption vulnerability in Schneider Electric Modicon M340 CPU (part numbers BMXP34*), published on 13 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists that could cause a potential arbitrary code execution after a successful Man-In-The-Middle attack followed by sending a crafted Modbus function call to tamper with memory area involved in memory size computation.
Weakness: CWE-119
Which versions are affected by CVE-2024-8938?
How do I fix CVE-2024-8938?
No fix has been published for CVE-2024-8938 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-2024-8938 being exploited?
There is no known exploitation of CVE-2024-8938 in the wild and no public exploit code.
Sources
Also known as GHSA-fv43-v7vc-rjjf.