How severe is CVE-2021-25388?

CVE-2021-25388 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-25388 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25388?

CVE-2021-25388 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25388?

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

When was CVE-2021-25388 published?

CVE-2021-25388 was published on 2021-06-11 and last updated on 2026-06-17.

CVE-2021-25388

CVE-2021-25388 is a high-severity vulnerability in Google Android with a CVSS 3.x base score of 7.1. 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-354.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 3.6
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-354
Affected product: Google Android
Published: 2021-06-11
Last modified: 2026-06-17

Description

Improper caller check vulnerability in Knox Core prior to SMR MAY-2021 Release 1 allows attackers to install arbitrary app.

Frequently asked questions

What is CVE-2021-25388?: Improper caller check vulnerability in Knox Core prior to SMR MAY-2021 Release 1 allows attackers to install arbitrary app.
How severe is CVE-2021-25388?: CVE-2021-25388 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-25388 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25388?: CVE-2021-25388 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25388?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-25388 published?: CVE-2021-25388 was published on 2021-06-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*

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