CVE-2026-20753
HighSummary
Integer overflow in the UEFI firmware for the Slim Bootloader may allow an escalation of privilege. A system software adversary with privileged access and a low complexity attack may enable local code execution.
Risk Assessment
This vulnerability may significantly impact the confidentiality, integrity, and availability of the system, posing a high risk to the organization.
Recommendation
It is recommended to update the UEFI firmware to the latest version to minimize the risk of privilege escalation.
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Original NVD description (English source)
Integer overflow in the UEFI firmware for the Slim Bootloader may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable local code execution. 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 (high), integrity (high) and availability (high) impacts.