How severe is CVE-2021-39665?

CVE-2021-39665 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-39665 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-39665?

CVE-2021-39665 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-39665?

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

When was CVE-2021-39665 published?

CVE-2021-39665 was published on 2022-02-11 and last updated on 2026-06-17.

CVE-2021-39665

CVE-2021-39665 is a medium-severity vulnerability in Google Android with a CVSS 3.x base score of 6.5. 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: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Google Android
Published: 2022-02-11
Last modified: 2026-06-17

Description

In checkSpsUpdated of AAVCAssembler.cpp, there is a possible out of bounds read due to a heap buffer overflow. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-204077881

Frequently asked questions

What is CVE-2021-39665?: In checkSpsUpdated of AAVCAssembler.cpp, there is a possible out of bounds read due to a heap buffer overflow. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-204077881
How severe is CVE-2021-39665?: CVE-2021-39665 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-39665 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39665?: CVE-2021-39665 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-39665?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-39665 published?: CVE-2021-39665 was published on 2022-02-11 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/2022-02-01

Affected products (1)

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

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