How severe is CVE-2021-1023?

CVE-2021-1023 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-1023 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-1023?

CVE-2021-1023 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-1023?

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

When was CVE-2021-1023 published?

CVE-2021-1023 was published on 2021-12-15 and last updated on 2026-06-17.

CVE-2021-1023

CVE-2021-1023 is a medium-severity vulnerability in Google Android with a CVSS 3.x base score of 5.0. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
CVSS v2: 1.9
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Google Android
Published: 2021-12-15
Last modified: 2026-06-17

Description

In onCreate of RequestIgnoreBatteryOptimizations.java, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-195963373

Frequently asked questions

What is CVE-2021-1023?: In onCreate of RequestIgnoreBatteryOptimizations.java, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-195963373
How severe is CVE-2021-1023?: CVE-2021-1023 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-1023 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1023?: CVE-2021-1023 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-1023?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-1023 published?: CVE-2021-1023 was published on 2021-12-15 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/pixel/2021-12-01

Affected products (1)

cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*

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