How severe is CVE-2021-0703?

CVE-2021-0703 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-0703 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-2021-0703?

CVE-2021-0703 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0703?

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

When was CVE-2021-0703 published?

CVE-2021-0703 was published on 2021-10-22 and last updated on 2026-06-17.

CVE-2021-0703

CVE-2021-0703 is a medium-severity vulnerability in Google Android with a CVSS 3.x base score of 6.8. 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-416.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Google Android
Published: 2021-10-22
Last modified: 2026-06-17

Description

In SecondStageMain of init.cpp, there is a possible use after free due to incorrect shared_ptr usage. This could lead to local escalation of privilege if the attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-184569329

Frequently asked questions

What is CVE-2021-0703?: In SecondStageMain of init.cpp, there is a possible use after free due to incorrect shared_ptr usage. This could lead to local escalation of privilege if the attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-184569329
How severe is CVE-2021-0703?: CVE-2021-0703 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-0703 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-2021-0703?: CVE-2021-0703 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0703?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0703 published?: CVE-2021-0703 was published on 2021-10-22 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/2021-10-01

Affected products (1)

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

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