Intel Slim Bootloader AuthenticateComponent out-of-bounds

Summaryinfo

A vulnerability was found in Intel Slim Bootloader and classified as problematic. The impacted element is an unknown function of the component AuthenticateComponent. Executing a manipulation can lead to out-of-bounds. This vulnerability is registered as CVE-2026-28746. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in Intel Slim Bootloader (the affected version is unknown). This vulnerability affects an unknown code of the component AuthenticateComponent. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. CVE summarizes:

Out-of-bounds read in the AuthenticateComponent for the Intel(R) Slim Bootloader within Ring 0: Bare Metal OS may allow a denial of service. System software adversary with a privileged user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

The advisory is available at intel.com. This vulnerability was named CVE-2026-28746 since 04/02/2026. The exploitation appears to be easy. Local access is required to approach this attack. The exploitation requires an enhanced level of successful authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/10/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Intel

Name

• Slim Bootloader

License

• commercial

Website

• Vendor: https://www.intel.com/

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