Overview
CVE-2025-8076 is a high-severity vulnerability affecting the Baseboard Management Controller (BMC) web function in certain Supermicro motherboards, specifically the MBD-X13SEDW-F. This vulnerability allows a remote attacker, after successfully authenticating to the BMC web server, to execute arbitrary code due to a stack buffer overflow. This poses a significant risk to the integrity and availability of affected systems.
Technical Details
The vulnerability resides in the handling of specific requests to the BMC web interface. By crafting a malicious payload and sending it to a vulnerable endpoint after successful authentication, an attacker can overwrite parts of the stack memory. This allows them to inject and execute arbitrary code with the privileges of the BMC.
The specific attack vector involves exploiting a lack of proper input validation and bounds checking in a certain function handling user-provided data. The crafted payload overflows the stack buffer, potentially leading to complete system compromise.
Affected Product:
- Supermicro MBD-X13SEDW-F
CVSS Analysis
The Common Vulnerability Scoring System (CVSS) provides a standardized way to assess the severity of vulnerabilities. CVE-2025-8076 has a CVSS score of 7.2, indicating a HIGH severity vulnerability.
- CVSS Score: 7.2
This score reflects the potential for remote code execution after authentication. The vulnerability requires authentication, which lowers the base score slightly compared to an unauthenticated vulnerability.
Possible Impact
Exploitation of CVE-2025-8076 can have serious consequences:
- Remote Code Execution: An attacker can execute arbitrary code on the BMC, potentially gaining full control of the server.
- Data Theft: An attacker could steal sensitive data stored on or accessible via the BMC.
- System Compromise: Full system compromise, allowing attackers to pivot to other systems on the network.
- Denial of Service (DoS): The BMC could be rendered unusable, disrupting server management and monitoring capabilities.
Mitigation and Patch Steps
Supermicro has released a patch to address CVE-2025-8076. It is strongly recommended to apply the patch immediately to all affected systems.
- Identify Affected Systems: Determine if you are using Supermicro MBD-X13SEDW-F or any other potentially affected motherboard.
- Obtain the Patch: Download the latest BMC firmware update from the official Supermicro website. The update specifically addressing this vulnerability can be found in the security advisory.
- Apply the Patch: Follow the instructions provided by Supermicro to update the BMC firmware. Ensure you have a proper backup before performing the update.
- Verify the Update: After the update, verify that the vulnerability is resolved by testing the BMC web interface.
- Network Segmentation: Isolate the BMC network from the main network to limit the impact of a potential breach.
- Strong Passwords: Enforce strong passwords for BMC accounts and regularly review and update them.
- Disable Unnecessary Services: Disable any unnecessary services running on the BMC.
