How severe is CVE-2021-39708?

CVE-2021-39708 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-39708 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-39708?

CVE-2021-39708 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-39708?

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

When was CVE-2021-39708 published?

CVE-2021-39708 was published on 2022-03-16 and last updated on 2026-06-17.

CVE-2021-39708

CVE-2021-39708 is a critical-severity vulnerability in Google Android with a CVSS 3.x base score of 9.8. 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Google Android
Published: 2022-03-16
Last modified: 2026-06-17

Description

In gatt_process_notification of gatt_cl.cc, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-206128341

Frequently asked questions

What is CVE-2021-39708?: In gatt_process_notification of gatt_cl.cc, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-206128341
How severe is CVE-2021-39708?: CVE-2021-39708 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-39708 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39708?: CVE-2021-39708 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-39708?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-39708 published?: CVE-2021-39708 was published on 2022-03-16 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/2022-03-01

Affected products (1)

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

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