How severe is CVE-2015-3863?

CVE-2015-3863 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2015-3863 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3863?

CVE-2015-3863 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-3863?

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-2015-3863 published?

CVE-2015-3863 was published on 2015-10-01 and last updated on 2026-06-17.

CVE-2015-3863

CVE-2015-3863 is a critical-severity vulnerability in Google Android with a CVSS 2.0 base score of 9.3. 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-189.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Google Android
Published: 2015-10-01
Last modified: 2026-06-17

Description

Multiple integer overflows in the Blob class in keystore/keystore.cpp in Keystore in Android before 5.1.1 LMY48M allow attackers to execute arbitrary code and read arbitrary Keystore keys via an application that uses a crafted blob in an insert operation, aka internal bug 22802399.

Frequently asked questions

What is CVE-2015-3863?: Multiple integer overflows in the Blob class in keystore/keystore.cpp in Keystore in Android before 5.1.1 LMY48M allow attackers to execute arbitrary code and read arbitrary Keystore keys via an application that uses a crafted blob in an insert operation, aka internal bug 22802399.
How severe is CVE-2015-3863?: CVE-2015-3863 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2015-3863 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3863?: CVE-2015-3863 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-3863?: 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-2015-3863 published?: CVE-2015-3863 was published on 2015-10-01 and last updated on 2026-06-17.

References

Affected products (1)

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

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