CVE-2026-18448: medium-severity vulnerability in TianoCore EDK2
Leak SMM RAM from the kernel (Simply TSA after an SMI)
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.6epss 0.1%
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.
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
TianoCore · EDK2Related CVEs — TianoCore EDK2
In the same product, most dangerous first.
CVE-2025-2296HIGHUn-verified kernel bypass Secure Boot mechanism in direct boot modeEPSS 0.8%CVE-2026-97631CRITICALPre-boot RCE in EDK II PXE driverEPSS 0.6%CVE-2024-38796MEDIUMInteger overflow in PeCoffLoaderRelocateImageEPSS 0.4%CVE-2025-2295LOWPotential iSCSI R2T PDU VulnerabilityEPSS 0.2%CVE-2024-38805MEDIUMiSCSI Remote Memory Corruption and Denial of ServiceEPSS 0.2%CVE-2024-38797MEDIUMOut-of-bounds Read in HashPeImageByType()EPSS 0.2%