How severe is CVE-2021-0398?

CVE-2021-0398 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-0398 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-2021-0398?

CVE-2021-0398 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0398?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-0398 published?

CVE-2021-0398 was published on 2021-03-10 and last updated on 2026-06-17.

CVE-2021-0398

CVE-2021-0398 is a high-severity vulnerability in Google Android with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Google Android
Published: 2021-03-10
Last modified: 2026-06-17

Description

In bindServiceLocked of ActiveServices.java, there is a possible foreground service launch due to a confused deputy. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-173516292

Frequently asked questions

What is CVE-2021-0398?: In bindServiceLocked of ActiveServices.java, there is a possible foreground service launch due to a confused deputy. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-173516292
How severe is CVE-2021-0398?: CVE-2021-0398 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-0398 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-2021-0398?: CVE-2021-0398 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0398?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-0398 published?: CVE-2021-0398 was published on 2021-03-10 and last updated on 2026-06-17.

References

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

Affected products (1)

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

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