CVE-2026-55716
Received Received - Intake

Out-of-Bounds Read in Intel Server Board UEFI Firmware

Publication date: 2026-11-10

Last updated on: 2026-11-10

Assigner: Intel Corporation

Description
Out-of-bounds read in the CheckUefiVgaMode for the Intel(R) Server Board D50DNP and Intel(R) Server Board M50FCP within Ring 0 UEFI may allow an information disclosure. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

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Meta Information

Published
2026-11-10
Last Modified
2026-11-10
Generated
2026-11-10
AI Q&A
2026-11-10
EPSS Evaluated
N/A
NVD
CVE-2026-55716
EUVD
EUVD-2026-121670

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
intel server_board_d50dnp *
intel server_board_m50fcp *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This is an out-of-bounds read vulnerability in the CheckUefiVgaMode function for Intel Server Board D50DNP and M50FCP within Ring 0 UEFI. It may allow an information disclosure if exploited by a privileged user with startup code or SMM adversary access. The attack requires local access, high complexity, and no special internal knowledge or user interaction.

Impact Analysis

The vulnerability may lead to data exposure, impacting system confidentiality. It requires a privileged attacker with specific conditions met, making exploitation unlikely without those prerequisites. No direct impact on integrity or availability is expected.

Mitigation Strategies

Apply firmware updates from Intel for affected Server Board D50DNP and M50FCP systems to patch the CheckUefiVgaMode out-of-bounds read vulnerability. Ensure secure boot is enabled and restrict privileged user access to minimize attack surface.

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