CVE-2021-43614

Medium

Description

Error in handling the PlatformLangCodes UEFI variable could cause a buffer overflow, leading to resource exhaustion and failure.

SeverityMedium
CVSS6.7
Exploit probability—
ProductInsydeH2O
PublishedSep 3, 2026
First seenSep 3, 2026
Weakness typeCWE-120CWE-120

How to fix

Update
  • Insyde Software InsydeH2O01.01.04.0008 or later

Affected products

ProductAffected versionsFixed in
Insyde Software InsydeH2OInsydeH2OUvePkg ≤ v < 01.01.04.000801.01.04.0008

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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