How severe is CVE-2023-21270?

CVE-2023-21270 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-21270 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-2023-21270?

CVE-2023-21270 primarily affects Google Android. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-21270?

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.

Does CVE-2023-21270 have an EU (EUVD) identifier?

Yes. CVE-2023-21270 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-25438.

When was CVE-2023-21270 published?

CVE-2023-21270 was published on 2024-11-19 and last updated on 2026-06-17.

CVE-2023-21270

CVE-2023-21270 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)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-25438
Weakness: CWE-863
Affected product: Google Android
Published: 2024-11-19
Last modified: 2026-06-17

Description

In restorePermissionState of PermissionManagerServiceImpl.java, there is a possible way for an app to keep permissions that should be revoked due to incorrect permission flags cleared during an update. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.

Frequently asked questions

What is CVE-2023-21270?: In restorePermissionState of PermissionManagerServiceImpl.java, there is a possible way for an app to keep permissions that should be revoked due to incorrect permission flags cleared during an update. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.
How severe is CVE-2023-21270?: CVE-2023-21270 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-21270 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-2023-21270?: CVE-2023-21270 primarily affects Google Android. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-21270?: 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.
Does CVE-2023-21270 have an EU (EUVD) identifier?: Yes. CVE-2023-21270 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-25438.
When was CVE-2023-21270 published?: CVE-2023-21270 was published on 2024-11-19 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/2023-08-01

Affected products (3)

cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:12.1:*:*:*:*:*:*:*
cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*

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