How severe is CVE-2021-0317?

CVE-2021-0317 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-0317 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-0317?

CVE-2021-0317 primarily affects Google Android. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-0317?

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-2021-0317 published?

CVE-2021-0317 was published on 2021-01-11 and last updated on 2026-06-17.

CVE-2021-0317

CVE-2021-0317 is a high-severity vulnerability in Google Android with a CVSS 3.x base score of 7.8. 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-863.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.4
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Google Android
Published: 2021-01-11
Last modified: 2026-06-17

Description

In createOrUpdate of Permission.java and related code, there is possible permission escalation due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android; Versions: Android-10, Android-11, Android-8.0, Android-8.1, Android-9; Android ID: A-168319670.

Frequently asked questions

What is CVE-2021-0317?: In createOrUpdate of Permission.java and related code, there is possible permission escalation due to a logic error. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android; Versions: Android-10, Android-11, Android-8.0, Android-8.1, Android-9; Android ID: A-168319670.
How severe is CVE-2021-0317?: CVE-2021-0317 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-0317 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-0317?: CVE-2021-0317 primarily affects Google Android. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-0317?: 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-2021-0317 published?: CVE-2021-0317 was published on 2021-01-11 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/2021-01-01

Affected products (5)

cpe:2.3:o:google:android:8.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:8.1:*:*:*:*:*:*:*
cpe:2.3:o:google:android:9.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*

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