CVE-2026-3820 Supermicro BMC's SMTP service contains a command injection vulnerability
An attacker with admin privileges can inject commands into the SMTP service configuration, leading to arbitrary code execution or system compromise.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3820?
CVE-2026-3820 is a high-severity command injection vulnerability in SMCI AS-2115HS-TNR, published on 4 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
There is a vulnerability in the Supermicro BMC SMTP service at Supermicro AS-2115HS-TNR. An attacker may obtain administrator privileges and inject specially crafted characters into the SMTP service configuration. This may cause the underlying system to execute unintended commands during process invocation.
Potential impact includes denial-of-service attacks, arbitrary code execution, or permanent compromise of the controller.
Weakness: CWE-78
Which versions are affected by CVE-2026-3820?
How do I fix CVE-2026-3820?
No fix has been published for CVE-2026-3820 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-3820 being exploited?
There is no known exploitation of CVE-2026-3820 in the wild and no public exploit code.
Sources
Also known as GHSA-wp43-6fh8-q2qr.