CVE-2026-3291 Overview
CVE-2026-3291 affects the Samsung Print Service Plugin for Android. Outdated versions of the application can disclose sensitive information when used on mobile devices. HP has issued updates to address the issue, classified under CWE-926 (Improper Export of Android Application Components).
The weakness requires local access to the affected device and no privileges or user interaction. Successful exploitation can expose confidential data handled by the print service plugin to other applications running on the same Android device.
Critical Impact
A local Android application can read confidential data processed by an outdated Samsung Print Service Plugin without requiring elevated privileges or user interaction.
Affected Products
- Samsung Print Service Plugin for Android (outdated versions)
- Android mobile devices running the vulnerable plugin
- HP-managed deployments referencing the HP Security Bulletin
Discovery Timeline
- 2026-05-06 - CVE-2026-3291 published to NVD
- 2026-05-06 - Last updated in NVD database
Technical Details for CVE-2026-3291
Vulnerability Analysis
CVE-2026-3291 is an information disclosure vulnerability in the Samsung Print Service Plugin for Android. The flaw maps to CWE-926, which describes improper export of Android application components. When an Android component is improperly exported, other installed applications can interact with it through inter-process communication channels that should remain private.
A local attacker, in this context another application installed on the same device, can query or invoke the exposed component to retrieve information processed by the plugin. The CVSS vector indicates a local attack path with no privileges, no user interaction, and a high impact on confidentiality, with no impact on integrity or availability.
Root Cause
The root cause is the improper export of one or more Android components within outdated versions of the Samsung Print Service Plugin. Components such as activities, services, content providers, or broadcast receivers declared in the application manifest are reachable by third-party apps without enforcing the appropriate permission checks or signature-level protections.
Attack Vector
Exploitation requires a malicious or curious application to be installed on the same Android device as the vulnerable plugin. That application sends crafted intents or queries to the exported components and receives sensitive data in response. No network access, no user prompt, and no escalated privileges are needed. Refer to the HP Security Bulletin for the authoritative description of the affected components.
Detection Methods for CVE-2026-3291
Indicators of Compromise
- Installation of unexpected or unsigned APKs on devices that also have the Samsung Print Service Plugin installed.
- Android log entries showing third-party packages binding to or starting components owned by the print service plugin.
- Anomalous intent traffic targeting the plugin's package name from non-system applications.
Detection Strategies
- Inventory mobile devices to identify installations of the Samsung Print Service Plugin and capture version metadata.
- Use Mobile Device Management (MDM) reporting to flag devices running outdated plugin versions referenced in the HP Security Bulletin.
- Review Android application manifests during mobile app vetting to identify components exported without permission attributes.
Monitoring Recommendations
- Monitor MDM compliance dashboards for the presence of vulnerable plugin versions across the fleet.
- Track sideloaded applications and applications requesting broad inter-process communication on managed Android devices.
- Subscribe to HP advisory updates so new plugin releases are pushed to managed devices promptly.
How to Mitigate CVE-2026-3291
Immediate Actions Required
- Update the Samsung Print Service Plugin for Android to the latest version distributed through the official application store.
- Identify and remove the plugin from devices that no longer require print services.
- Restrict installation of untrusted applications on devices that handle sensitive print jobs.
Patch Information
HP is releasing updates for the Samsung Print Service Plugin for Android to address CVE-2026-3291. Administrators should follow the remediation guidance in the HP Security Bulletin and ensure managed Android devices receive the corrected version.
Workarounds
- Disable or uninstall the Samsung Print Service Plugin on devices where printing is not required until the update is applied.
- Enforce MDM policies that block installation of unvetted applications on devices that retain the plugin.
- Segment mobile devices that process confidential documents from general-purpose user devices where possible.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
