How severe is CVE-2021-22400?

CVE-2021-22400 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-22400 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22400?

CVE-2021-22400 primarily affects Huawei Oxfords-an00a Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22400?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-22400 published?

CVE-2021-22400 was published on 2021-08-03 and last updated on 2026-06-17.

CVE-2021-22400

CVE-2021-22400 is a medium-severity vulnerability in Huawei Oxfords-an00a Firmware with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Huawei Oxfords-an00a Firmware
Published: 2021-08-03
Last modified: 2026-06-17

Description

Some Huawei Smartphones has an insufficient input validation vulnerability due to the lack of parameter validation. An attacker may trick a user into installing a malicious APP. The app can modify specific parameters, causing the system to crash. Affected product include:OxfordS-AN00A 10.0.1.10(C00E10R1P1),10.0.1.105(C00E103R3P3),10.0.1.115(C00E110R3P3),10.0.1.123(C00E121R3P3),10.0.1.135(C00E130R3P3),10.0.1.135(C00E130R4P1),10.0.1.152(C00E140R4P1),10.0.1.160(C00E160R4P1),10.0.1.167(C00E166R4P1),10.0.1.173(C00E172R5P1),10.0.1.178(C00E175R5P1) and 10.1.0.202(C00E79R5P1).

Frequently asked questions

What is CVE-2021-22400?: Some Huawei Smartphones has an insufficient input validation vulnerability due to the lack of parameter validation. An attacker may trick a user into installing a malicious APP. The app can modify specific parameters, causing the system to crash. Affected product include:OxfordS-AN00A 10.0.1.10(C00E10R1P1),10.0.1.105(C00E103R3P3),10.0.1.115(C00E110R3P3),10.0.1.123(C00E121R3P3),10.0.1.135(C00E130R3P3),10.0.1.135(C00E130R4P1),10.0.1.152(C00E140R4P1),10.0.1.160(C00E160R4P1),10.0.1.167(C00E166R4P1),10.0.1.173(C00E172R5P1),10.0.1.178(C00E175R5P1) and 10.1.0.202(C00E79R5P1).
How severe is CVE-2021-22400?: CVE-2021-22400 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-22400 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22400?: CVE-2021-22400 primarily affects Huawei Oxfords-an00a Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22400?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22400 published?: CVE-2021-22400 was published on 2021-08-03 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210721-01-phones-en

Affected products (12)

cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.10\(c00e10r1p1\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.105\(c00e103r3p3\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.115\(c00e110r3p3\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.123\(c00e121r3p3\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.135\(c00e130r3p3\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.135\(c00e130r4p1\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.152\(c00e140r4p1\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.160\(c00e160r4p1\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.167\(c00e166r4p1\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.173\(c00e172r5p1\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.0.1.178\(c00e175r5p1\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:oxfords-an00a_firmware:10.1.0.202\(c00e79r5p1\):*:*:*:*:*:*:*

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