What is CVE-2026-58946 and how does it occur?

CVE-2026-58946 is a high-severity security flaw registered with a CVSS score of 8.4, documented in detail by the vulnerabilidad crítica CVE-2026-115905 references and official tracking organizations. The vulnerability specifically affects the navigateUpTo function located within ActivityClientController.java. As noted in the CVE-2026-105769 en Kaniko ecosystem context, understanding underlying logic errors is crucial for system security.

The root cause of the issue is a logic error in the code that triggers a possible permission bypass. This flaw corresponds to CWE-693 and carries a CVSS vector of CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, meaning it impacts confidentiality, integrity, and availability significantly.

Who is affected by this permission bypass?

The vulnerability affects local environments where the vulnerable code component is active, potentially impacting systems similar to those analyzed under vulnerabilidad crítica CVSS 8.8. Since the flaw resides in ActivityClientController.java, any local component relying on it without proper patches is at risk.

Attackers do not need any additional execution privileges to leverage this flaw, and user interaction is completely unnecessary for successful exploitation. This makes it an efficient vector for local privilege escalation if left unmitigated.

How do I protect my system against this flaw?

Mitigating local privilege escalation vulnerabilities requires prompt action, much like addressing vulnerabilidad crítica CVE-2026-115905 patches. Administrators and developers should closely monitor official advisory channels such as vulnerabilidad crítica CVSS 8.8 channels for vendor-supplied patches.

Follow these essential steps to secure your environment against local escalation risks:

  1. Review the official security bulletin at https://source.android.com/docs/security/bulletin/2026/2026-11-01 for specific patch notifications.
  2. Identify instances utilizing the affected ActivityClientController.java component.
  3. Apply the latest vendor-supplied updates or patches immediately upon release.
  4. Audit local user permissions and restrict unnecessary local execution capabilities.