Integer overflow in Slim Bootloader May Allow An Escalation Of Privilege. System Software Adversary With A Privileged User Combined Low Complexity Attack Enable Local Code Execution. This Result Potentially Occur Via Access When Requirements Are Present Without Special Internal Knowledge And Requires No Interaction. The Potential Vulnerability Impact Confidentiality (High), Integrity (High) Availability Vulnerable System, Resulting In Subsequent Impacts.
CVE-2026-20753
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.
Vulnerability class: Integer Overflow
Published · last modified .
EPSS exploit prediction
EPSS: 0.001 (1.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Slim Bootloader May Allow An Escalation Of Privilege. System Software Adversary With A Privileged User Combined Low Complexity Attack Enable Local Code Execution. This Result Potentially Occur Via Access When Requirements Are Present Without Special Internal Knowledge And Requires No Interaction. The Potential Vulnerability Impact Confidentiality (High), Integrity (High) Availability Vulnerable System, Resulting In Subsequent Impacts. — versions See references