How severe is CVE-2021-0991?

CVE-2021-0991 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-0991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0991?

CVE-2021-0991 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-0991?

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

When was CVE-2021-0991 published?

CVE-2021-0991 was published on 2021-12-15 and last updated on 2026-06-17.

CVE-2021-0991

CVE-2021-0991 is a low-severity vulnerability in Google Android with a CVSS 3.x base score of 2.4. 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-532.

Key facts

Severity: Low (CVSS 3.x base score 2.4)
CVSS v2: 2.7
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: Google Android
Published: 2021-12-15
Last modified: 2026-06-17

Description

In OnMetadataChangedListener of AdvancedBluetoothDetailsHeaderController.java, there is a possible leak of Bluetooth MAC addresses due to log information disclosure. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-181588752

Frequently asked questions

What is CVE-2021-0991?: In OnMetadataChangedListener of AdvancedBluetoothDetailsHeaderController.java, there is a possible leak of Bluetooth MAC addresses due to log information disclosure. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-181588752
How severe is CVE-2021-0991?: CVE-2021-0991 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-0991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0991?: CVE-2021-0991 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-0991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-0991 published?: CVE-2021-0991 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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