CVE-2021-43614

VariableEditSmm: Error checking of UEFI variables could cause buffer overflow, leading to code execution

State: Published
Severity: 6.7 Medium
Published: Sep 3, 2026
Updated: Sep 3, 2026
Reserved: Nov 12, 2021

Description

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

Scores

CVSS	Score	Vector	Source
3.1	6.7 Medium	CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L	Insyde

Weaknesses

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

Product	Versions
InsydeH2OInsyde Software	InsydeH2OUvePkg to before 01.01.04.0008Affected

References

https://www.insyde.com/security-pledge/sa-2022026/

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.