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TI-2021-17036 Aliases CVE-2021-39803GHSA-rpq4-mrj2-p6qj

Use after free in Android

Priority LOW 30CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350

Why it matters now

EPSS 0.00649 51st 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

VendorProductAffected versionsFixed inStatusSource
—AndroidAndroid-10 Android-11 Android-12 Android-12L—No fix listedCNA
  • Android Vendor— Affected Android-10 Android-11 Android-12 Android-12L Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:*10.0VulnerableGoogle
cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*11.0VulnerableGoogle
cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*12.0VulnerableGoogle
cpe:2.3:o:google:android:12.1:*:*:*:*:*:*:*12.1VulnerableGoogle
  • cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Google
  • cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Google
  • cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:* Versions 12.0 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

  1. 2026-10-02 Threatist record created from CVE-2021-39803
  2. 2026-10-03 Alias added: GHSA-rpq4-mrj2-p6qj
  3. 2026-10-16 EPSS moved to the 50th–90th percentile

References

Patch 1

  • 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