# CVE-2026-58836: CVE-2026-58836

Status: published. Published: 2026-11-02. Updated: 2026-11-02.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Google / Android: 17 (affected); 16-qpr2 (affected); 16 (affected). Source: CNA: google_android

## Severity and prioritization

- CVSS 3.1: 7.8 (high); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H; source: ADP: CISA-ADP

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-693

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://source.android.com/docs/security/bulletin/2026/2026-11-01 (CNA: google_android)

## Provenance

- CNA: google_android: https://www.cve.org/CVERecord?id=CVE-2026-58836; retrieved 2026-11-02; source updated 2026-11-02

Revision: d4d9f02ee78882dd3c992e19565419c6e46bba5b2fa87625a84a8b5b71c9a221

Canonical: https://y2.dev/cve/CVE-2026-58836

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