CVE-2021-22420

Name: CVE-2021-22420
Creator: NVD / NIST
Published: 2021-08-03T18:15:08.127+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2021-22420 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A component of the HarmonyOS has a External Control of System or Configuration Setting vulnerability. Local attackers may exploit this vulnerability to cause the underlying trust of the application trustlist mechanism is missing... EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

A component of the HarmonyOS has a External Control of System or Configuration Setting vulnerability. Local attackers may exploit this vulnerability to cause the underlying trust of the application trustlist mechanism is missing..

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.18%

7.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-668

Affected Software

Vendor	Product	Versions
Huawei	Harmonyos	2.0

References

https://device.harmonyos.com/cn/docs/security/update/oem_security_update_phone_202106-0000001165452077Not Applicable, Vendor Advisory
https://device.harmonyos.com/cn/docs/security/update/oem_security_update_phone_202106-0000001165452077Not Applicable, Vendor Advisory

Timeline

Published: Aug 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22420?

How severe is CVE-2021-22420?

CVE-2021-22420 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22420?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22420?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST