CVE-2026-18448Leak SMM RAM from the kernel (Simply TSA after an SMI)

Description

EDK2 contains a vulnerability in BIOS where a privileged attacker may cause “Exposure of Sensitive Information during Transient Execution” by local access. Successful exploitation of this vulnerability may result in disclosure of SMRAM contents. It could also impact Confidentiality.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/tianocore/edk2/security/advisories/GHSA-7v86-66vf-h88j