TI-2026-83958 Aliases CVE-2026-28588 GHSA-3gp5-8j33-m8mx

Logic error in Android ExternalStorageProvider exposes protected data

LOW 37CWE-284Published 2026-11-02 · Updated 2026-11-03

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-284.

Summary

Google Android versions from 14, from 15, from 16, from 16-qpr2 and from 17 are affected. A logic error in shouldBlockDirectoryFromTree in ExternalStorageProvider.java lets a process access protected data (CWE-284). A local attacker with no additional execution privileges and no user interaction can escalate privileges.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

In shouldBlockDirectoryFromTree of ExternalStorageProvider.java, there is a possible way to access protected data due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00097 0th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Google	Android	17; 16-qpr2; 16; 15; 14	—	No fix listed	CNA

Android VendorGoogle Affected 17; 16-qpr2; 16; 15; 14 Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPE	Versions	Role	Vendor
cpe:2.3:o:google:android:14.0:::::::*	14.0	Vulnerable	Google
cpe:2.3:o:google:android:15.0:::::::*	15.0	Vulnerable	Google
cpe:2.3:o:google:android:16.0:-::::::	16.0	Vulnerable	Google
cpe:2.3:o:google:android:16.0:qpr2::::::	16.0 qpr2	Vulnerable	Google
cpe:2.3:o:google:android:17.0:-::::::	17.0	Vulnerable	Google

cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:* Versions 14.0 Vulnerable ·Google
cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:* Versions 15.0 Vulnerable ·Google
cpe:2.3:o:google:android:16.0:-:*:*:*:*:*:* Versions 16.0 Vulnerable ·Google
cpe:2.3:o:google:android:16.0:qpr2:*:*:*:*:*:* Versions 16.0 qpr2 Vulnerable ·Google
cpe:2.3:o:google:android:17.0:-:*:*:*:*:*:* Versions 17.0 Vulnerable ·Google

Remediation

The sources list no fixed version for Android.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

2026-11-02 Threatist record created from CVE-2026-28588
2026-11-02 CVSS score added · CISA ADP
2026-11-02 Weakness changed · CISA ADP
2026-11-02 CISA SSVC decision points changed
2026-11-02 Alias added: GHSA-3gp5-8j33-m8mx
2026-11-03 CISA SSVC decision points changed

References

Advisory 1

https://source.android.com/docs/security/bulletin/2026/2026-11-01

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