Cyber Resilience

CVE-2021-37021

Critical

Published: 07 December 2021

Published
07 December 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS Score 0.0025 49.0th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-37021 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Huawei Emui. Its CVSS base score is 9.1 (Critical).

Operationally, ranked at the 49.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

There is a Stack-based Buffer Overflow vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may lead to Out-of-bounds read.

CWE(s)
CWE-787

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

huawei
emui
10.1.0, 10.1.1, 11.0.0, 11.0.1
huawei
harmonyos
≤ 2.0
huawei
magic ui
3.1.0, 3.1.1, 4.0.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References