CVE-2025-7623 Supermicro BMC SMASH services has a Stack-based buffer overflow vulnerability
An authenticated attacker with SSH access can exploit a stack buffer overflow in the SMASH-CLP shell to achieve arbitrary code execution on the BMC firmware.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-7623?
CVE-2025-7623 is a medium-severity memory corruption vulnerability in SMCI MBD-X13SEDW-F, published on 18 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Stack-based buffer overflow in the SMASH-CLP shell. An authenticated attacker with SSH access to the BMC can exploit a stack buffer overflow via a crafted SMASH command, overwrite the return address and registers, and achieve arbitrary code execution on the BMC firmware operating system
Weakness: CWE-121
Which versions are affected by CVE-2025-7623?
How do I fix CVE-2025-7623?
No fix has been published for CVE-2025-7623 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-2025-7623 being exploited?
There is no known exploitation of CVE-2025-7623 in the wild and no public exploit code.
Sources
Also known as GHSA-95mg-3279-c5xh.