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.
History

Wed, 13 May 2026 05:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 12 May 2026 17:45:00 +0000

Type Values Removed Values Added
Title Integer Overflow in UEFI Slim Bootloader Allowing Privilege Escalation
First Time appeared Intel
Intel slim Bootloader
Vendors & Products Intel
Intel slim Bootloader

Tue, 12 May 2026 16:45:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-190
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: intel

Published:

Updated: 2026-05-13T03:57:58.619Z

Reserved: 2025-12-04T04:00:32.894Z

Link: CVE-2026-20753

cve-icon Vulnrichment

Updated: 2026-05-12T17:07:31.979Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-12T17:16:17.523

Modified: 2026-05-13T15:52:56.850

Link: CVE-2026-20753

cve-icon Redhat

No data.