CVE-2021-22420
A component of the HarmonyOS has a External Control of System or Configuration Setting...
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..
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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..
- Record
CVE-2021-22420- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.2 High
AV:L/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-668
- Updated
- 2026-11-02
CVE List No score
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..
- Record
CVE-2021-22420- Updated
- 2026-11-02
EUVDEUVD-2021-9566 No score
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..
- Record
EUVD-2021-9566- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rwfm-qq63-7jqr
A component of the HarmonyOS has a External Control of System or Configuration Setting...
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..
- Record
GHSA-rwfm-qq63-7jqr- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-610, CWE-668
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-22420 is a high vulnerability (CVSS 7.8) in Huawei Harmonyos, published August 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. No source names a fixed version.