Vulnerability in Google Android

[ Description ]Official description

In handlePackagePostInstall of InstallPackageHelper.java, there is a possible Enhanced Confirmation Mode (ECM) bypass vulnerability that allows a sideloaded application to modify the package source during a self-update due to a logic error in the code. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• CERT-FR3 Nov 2026CERTFR-2026-AVI-1443

  Multiple vulnerabilities in Google Android Translated from French

  Multiple vulnerabilities have been discovered in Google Android. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation and a breach of data confidentiality.

  CVE-2026-20546CVE-2026-58990CVE-2026-20548+213 more CVEs
• BSI CERT-Bund2 Nov 2026WID-SEC-2026-4288

  Android Patchday November 2026 (Google Android, Automotive OS and XR): Multiple vulnerabilities Translated from German

  Risk highCVE-2026-45201CVE-2026-20561CVE-2026-58956+222 more CVEs

[ References ]References

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