What is CVE-2021-43614?

CVE-2021-43614 is a medium-severity vulnerability, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.7/10. Published 2026-09-03.

How severe is CVE-2021-43614?

Medium severity. CVSS v3 base score is 6.7 out of 10.

CVE-2021-43614

CVE-2021-43614

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

Vulnerability class: Buffer Overflow

EPSS: 0.001 (3.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L.

Weakness classification (CWE)

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

References

8338d8cb-57f7-4252-abc0-96fd13e98d21

Frequently asked questions

What is CVE-2021-43614?: CVE-2021-43614 is a medium-severity vulnerability, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.7/10. Published 2026-09-03.
How severe is CVE-2021-43614?: Medium severity. CVSS v3 base score is 6.7 out of 10.