Intel Slim Bootloader UEFI Firmware protection mechanism

Summaryinfo

A vulnerability categorized as critical has been discovered in Intel Slim Bootloader. Affected by this vulnerability is an unknown functionality of the component UEFI Firmware. The manipulation results in protection mechanism. This vulnerability is identified as CVE-2025-35968. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in Intel Slim Bootloader (affected version unknown). Affected is an unknown functionality of the component UEFI Firmware. The manipulation with an unknown input leads to a protection mechanism vulnerability. CWE is classifying the issue as CWE-693. The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Protection mechanism failure in the UEFI firmware for the Slim Bootloader within firmware may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. 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 (high) 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 is traded as CVE-2025-35968 since 04/15/2025. The exploitability is told to be difficult. Local access is required to approach this attack. The exploitation needs additional levels 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 $5k-$25k at the moment (estimation calculated on 11/11/2025).

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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