What is CVE-2021-22453?

CVE-2021-22453 is a low-severity vulnerability in Huawei Harmonyos, classified under Out-of-bounds Read. CVSS score: 3.3/10. Published 2021-10-28.

How severe is CVE-2021-22453?

Low severity. CVSS v3 base score is 3.3 out of 10.

Out-of-bounds Read in Huawei Harmonyos

CVE-2021-22453

A component of the HarmonyOS has a Improper Input Validation vulnerability. Local attackers may exploit this vulnerability to cause nearby process crash.

Vulnerability class: Buffer Overflow

Published 2021-10-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.001 (3.4th percentile), scored 2026-09-30.

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

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

device.harmonyos.com/cn/docs/security/update/security-bulletins-202107-00000011… (Not Applicable, Vendor Advisory)

Frequently asked questions

What is CVE-2021-22453?: CVE-2021-22453 is a low-severity vulnerability in Huawei Harmonyos, classified under Out-of-bounds Read. CVSS score: 3.3/10. Published 2021-10-28.
How severe is CVE-2021-22453?: Low severity. CVSS v3 base score is 3.3 out of 10.