CVE-2026-20753
HIGH EPSS 2.5%
Published May 12, 20261mo ago · Modified Jun 17, 20261w ago
8.7 CVSS 4.0
Published May 12, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Local
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
2.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-190 Integer Overflow or Wraparound Numeric Error
References 1
- intel.com https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01425.html
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.