#VU109163 Time-of-check Time-of-use (TOCTOU) Race Condition in Intel Server Board D50DNP and Intel Server Board M50FCP UEFI - CVE-2025-20082

Vulnerability identifier: #VU109163

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20082

CWE-ID: CWE-367

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Intel Server Board D50DNP
Hardware solutions / Firmware
Intel Server Board M50FCP UEFI
Hardware solutions / Firmware

Vendor: Intel

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to a time-of-check, time-of-use (TOCTOU) race condition in the UEFI firmware SmiVariable driver. A local administrator can gain elevated privileges on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Intel Server Board D50DNP: before R01.02.0003

Intel Server Board M50FCP UEFI: before R01.02.0003

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External links
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01269.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.