CVE-2021-43614

MEDIUM
Published September 3, 2026

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

Full CISO analysis pending enrichment.

What systems are affected?

Package Ecosystem Vulnerable Range Patched
H2O pip No patch
7.5K OpenSSF 5.7 27 dependents Pushed 7d ago 5% patched ~0d to patch Full package profile →

Do you use H2O? You're affected.

How severe is it?

CVSS 3.1
6.7 / 10
EPSS
N/A
Exploitation Status
No known exploitation
Sophistication
N/A

What is the attack surface?

AV AC PR UI S C I A
AV Physical
AC High
PR High
UI Required
S Changed
C High
I High
A Low

What should I do?

No patch available

Monitor for updates. Consider compensating controls or temporary mitigations.

Which compliance frameworks are affected?

Compliance analysis pending. Sign in for full compliance mapping when available.

Frequently Asked Questions

What is CVE-2021-43614?

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

Is CVE-2021-43614 actively exploited?

No confirmed active exploitation of CVE-2021-43614 has been reported, but organizations should still patch proactively.

How to fix CVE-2021-43614?

No patch is currently available. Monitor vendor advisories for updates.

What is the CVSS score for CVE-2021-43614?

CVE-2021-43614 has a CVSS v3.1 base score of 6.7 (MEDIUM).

What are the technical details?

Original Advisory

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

CVSS Vector

CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:L

Timeline

Published
September 3, 2026
Last Modified
September 3, 2026
First Seen
September 3, 2026

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