TI-2021-16991 Aliases CVE-2021-39756 GHSA-8vmq-8657-wm23

Observable discrepancy in Android

LOW 24CWE-203Published 2022-03-30 · Updated 2024-08-04

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-203.

Summary

In Framework, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-184354287

Why it matters now

EPSS 0.00111 1st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	Android	Android-12L	—	No fix listed	CNA

Android Vendor— Affected Android-12L Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:google:android:12.1:::::::*	12.1	Vulnerable	Google

cpe:2.3:o:google:android:12.1:*:*:*:*:*:*:* Versions 12.1 Vulnerable ·Google

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-39756
2026-10-03 Alias added: GHSA-8vmq-8657-wm23

References

Advisory 1

https://source.android.com/security/bulletin/android-12l

TI-2026-42236 Improper authorization in Google Android KEVCVSS 3.1HIGH 8.8
TI-2025-30821 Use after free in Google Android KEVCVSS 3.1HIGH 8.8
TI-2023-17777 Improper privilege management in Google Android KEVCVSS 3.1HIGH 8.8
TI-2025-30872 Integer overflow in Google Android KEVCVSS 3.1HIGH 8.4
TI-2024-21766 there is a possible way to bypass due to a logic error in the code. KEVCVSS 3.1HIGH 8.1
TI-2025-30849 Missing authentication in Google Android KEVCVSS 3.1HIGH 7.8

See all 8410 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences