What is CVE-2021-39990?

CVE-2021-39990 is a critical-severity vulnerability in Huawei Harmonyos, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-01-03.

How severe is CVE-2021-39990?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Huawei Harmonyos

CVE-2021-39990

The screen lock module has a Stack-based Buffer Overflow vulnerability.Successful exploitation of this vulnerability may affect user experience.

Vulnerability class: Buffer Overflow

EPSS: 0.008 (51.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Huawei Harmonyos — versions 2.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

psirt@huawei.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-39990?: CVE-2021-39990 is a critical-severity vulnerability in Huawei Harmonyos, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-01-03.
How severe is CVE-2021-39990?: Critical severity. CVSS v3 base score is 9.8 out of 10.