CVE-2021-43614
VariableEditSmm: Error checking of UEFI variables could cause buffer overflow, leading to code execution
CVSS Score
6.7
EPSS Score
0.0%
EPSS Percentile
0th
Error in handling the PlatformLangCodes UEFI variable could cause a buffer overflow, leading to resource exhaustion and failure.
| Vendor | insyde software |
| Product | insydeh2o |
| Published | Sep 3, 2026 |
| Last Updated | Sep 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L Attack Vector
Physical
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
Insyde Software / InsydeH2O
InsydeH2OUvePkg < 01.01.04.0008