CVE-2026-28729

Integer Overflow in Intel Slim Bootloader UEFI Firmware Leading to Information Disclosure and Denial of Service

Published Aug 11, 2026 CVSS 4.0 · 2.4 Low EPSS < 1% KEV · Not listed
Description
Integer overflow in the UEFI firmware for the Intel(R) Slim Bootloader may allow an information disclosure. System software adversary with an authenticated 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 active user interaction. The potential vulnerability may impact the confidentiality (low), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (none) and availability (low) impacts.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Intel
Intel slim Bootloader
Vendors & Products Intel
Intel slim Bootloader
Type Values Removed Values Added
Title Integer Overflow in Intel Slim Bootloader UEFI Firmware Leading to Information Disclosure and Denial of Service
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Integer overflow in the UEFI firmware for the Intel(R) Slim Bootloader may allow an information disclosure. System software adversary with an authenticated 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 active user interaction. The potential vulnerability may impact the confidentiality (low), integrity (none) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (none) and availability (low) impacts.
Weaknesses CWE-190
References
Metrics cvssV4_0

{'score': 2.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:L/SC:L/SI:N/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
intel
Published
Updated
Aug 12, 2026, 3:20 PM
Reserved
Mar 13, 2026, 3:00 AM
Status
Awaiting Analysis
Published
Aug 11, 2026, 5:17 PM
Modified
Aug 12, 2026, 8:54 PM