How severe is CVE-2021-0463?

CVE-2021-0463 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 high, integrity none, and availability none.

Is CVE-2021-0463 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-2021-0463?

CVE-2021-0463 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0463?

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

When was CVE-2021-0463 published?

CVE-2021-0463 was published on 2021-03-10 and last updated on 2026-06-17.

CVE-2021-0463

CVE-2021-0463 is a medium-severity vulnerability in Google Android 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 1.9
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Google Android
Published: 2021-03-10
Last modified: 2026-06-17

Description

In convertToHidl of convert.cpp, there is a possible out of bounds read due to uninitialized data from ReturnFrameworkMessage. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-154867068

Frequently asked questions

What is CVE-2021-0463?: In convertToHidl of convert.cpp, there is a possible out of bounds read due to uninitialized data from ReturnFrameworkMessage. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-154867068
How severe is CVE-2021-0463?: CVE-2021-0463 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 high, integrity none, and availability none.
Is CVE-2021-0463 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-2021-0463?: CVE-2021-0463 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0463?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0463 published?: CVE-2021-0463 was published on 2021-03-10 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/pixel/2021-03-01

Affected products (1)

cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

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