What is CVE-2021-22318?

CVE-2021-22318 is a medium-severity vulnerability in Huawei Harmonyos, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2021-07-14.

How severe is CVE-2021-22318?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Huawei Harmonyos

CVE-2021-22318

A component of the HarmonyOS 2.0 has a Null Pointer Dereference Vulnerability. Local attackers may exploit this vulnerability to cause system denial of service.

Published 2021-07-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (3.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Huawei Harmonyos — versions 2.0
Harmonyos — versions HarmonyOS 2.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

device.harmonyos.com/cn/console/safetyDetail (Broken Link)

Frequently asked questions

What is CVE-2021-22318?: CVE-2021-22318 is a medium-severity vulnerability in Huawei Harmonyos, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2021-07-14.
How severe is CVE-2021-22318?: Medium severity. CVSS v3 base score is 5.5 out of 10.