CVE-2026-28584 Google CVE debrief

Who should care

Android device administrators and security teams should assess exposure and apply patches. They should also monitor for potential local denial of service attempts, review compensating controls for exposed systems, and verify patch application. The vulnerability affects Android devices, and its exploitation could disrupt device functionality, requiring a device reboot or reinstallation for recovery.

Why it matters

CVE-2026-28584 is a medium-severity vulnerability in PackageInstallerService.java that could lead to a permanent denial of service (DoS) on Android devices. Local attackers can exploit this issue without additional execution privileges or user interaction. Android device administrators and security teams should assess exposure, apply patches, and monitor for potential local denial of service attempts. Evidence is limited, and specific version information and remediation steps require verification from official sources.

• Local denial of service (DoS) could disrupt device functionality
• Permanent DoS requires device reboot or reinstallation
• Verification of patch application is necessary

Technical summary

A logic error in createSessionInternal of PackageInstallerService.java could lead to a permanent denial of service (DoS) on a device. This issue can be exploited locally without additional execution privileges or user interaction. The vulnerability affects Android devices, and its exploitation could disrupt device functionality, requiring a device reboot or reinstallation for recovery. Android device administrators and security teams should assess exposure and apply patches provided by the vendor. Specific technical details and remediation steps require verification from official sources.

Defensive priority

Medium priority for Android device administrators and security teams to assess exposure and apply patches.

Recommended defensive actions

• Assess exposure of Android devices to this vulnerability
• Apply patches provided by the vendor
• Monitor for potential local denial of service attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, specific version information and remediation steps are limited. Android device administrators and security teams should verify patch application, review compensating controls for exposed systems, and monitor for potential local denial of service attempts. The lack of detailed information necessitates defensive verification tasks and explicit evidence-limit language.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.