CVE-2021-43613: medium-severity vulnerability in InsydeH2O
SysPasswordDxe: Password hashes are exposed in runtime UEFI variables, leading to escalation of privilege
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 6.5epss 0.1%
An issue was discovered in SysPasswordDxe in Insyde InsydeH2O. User and administrator password hashes are exposed in runtime UEFI variables, leading to escalation of privilege
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Affected products
Insyde Software · InsydeH2ORelated CVEs — InsydeH2O
In the same product, most dangerous first.
CVE-2025-4275HIGHSecureFlashDxe: Incorrect UEFI variable attributes check allows usage of invalid certificateEPSS 0.5%CVE-2026-6484HIGHLack of verified boot to certain FV may cause arbitrary code executionEPSS 0.4%CVE-2025-4421HIGHEfiSmiServices: gEfiSmmCpuProtocol, SMM memory corruption vulnerabilities in SMM moduleEPSS 0.2%CVE-2025-4422HIGHEfiSmiServices : EfiPcdProtocol, SMM memory corruption vulnerabilities in SMM moduleEPSS 0.2%CVE-2025-4426MEDIUMSetupAutomationSmm : SMRAM memory contents leak / information disclosure vulnerability in SMM moduleEPSS 0.2%CVE-2025-4425HIGHSetupAutomationSmm: Stack overflow vulnerability in SMI handlerEPSS 0.2%