How severe is CVE-2021-0403?

CVE-2021-0403 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-0403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0403?

CVE-2021-0403 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0403?

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

When was CVE-2021-0403 published?

CVE-2021-0403 was published on 2021-02-26 and last updated on 2026-06-17.

CVE-2021-0403

CVE-2021-0403 is a medium-severity vulnerability in Google Android with a CVSS 3.x base score of 4.4. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 2.1
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Google Android
Published: 2021-02-26
Last modified: 2026-06-17

Description

In netdiag, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-11; Patch ID: ALPS05475124.

Frequently asked questions

What is CVE-2021-0403?: In netdiag, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-11; Patch ID: ALPS05475124.
How severe is CVE-2021-0403?: CVE-2021-0403 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-0403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0403?: CVE-2021-0403 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0403 published?: CVE-2021-0403 was published on 2021-02-26 and last updated on 2026-06-17.

References

https://corp.mediatek.com/product-security-acknowledgements

Affected products (1)

cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*

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