CVE-2026-58559: Vibration Service DoS Vulnerability

CVE-2026-58559 Overview

CVE-2026-58559 is a denial-of-service (DoS) vulnerability affecting the vibration service. According to the vendor advisory, successful exploitation may impact device availability. The issue is tracked under [CWE-789: Memory Allocation with Excessive Size Value], which typically involves unchecked allocation sizes leading to resource exhaustion.

The vulnerability requires user interaction and can be reached over the network, but does not compromise confidentiality or integrity. Details are published in the Huawei Support Bulletin.

Critical Impact
Successful exploitation may render the vibration service or dependent device functionality unavailable, disrupting normal operation until the process or device is restarted.

Affected Products

Products listed in the July 2026 Huawei Consumer Support Bulletin
Devices exposing the affected vibration service component
Specific product versions: Not Available in NVD data

Discovery Timeline

2026-07-15 - CVE-2026-58559 published to NVD
2026-07-15 - Last updated in NVD database

Technical Details for CVE-2026-58559

Vulnerability Analysis

The vulnerability resides in the vibration service, a system component responsible for controlling haptic feedback. The weakness is categorized as [CWE-789], which describes memory allocation with an excessive size value. When the service processes input that influences allocation size without proper validation, an attacker can trigger allocations that exhaust available memory.

Exploitation requires user interaction, which suggests the attack path involves the user opening a crafted resource, application, or message that reaches the vibration service. The scope is unchanged, meaning the impact is confined to the vulnerable component and its host process. Only availability is affected; the vulnerability does not expose data or permit code execution.

Root Cause

The root cause is insufficient bounds checking on values that drive memory allocation within the vibration service. When a request specifies an oversized or attacker-controlled length, the service allocates memory proportional to that value, leading to resource exhaustion or process termination.

Attack Vector

The attack vector is network-adjacent through the affected service, contingent on the victim performing an action such as opening a malicious file, link, or application. Once the crafted input reaches the vibration service, the allocation triggers a DoS condition that disrupts the service and potentially degrades device responsiveness. Refer to the Huawei Support Bulletin for advisory-specific technical detail. No public proof-of-concept has been released.

Detection Methods for CVE-2026-58559

Indicators of Compromise

Repeated crashes or restarts of the vibration service process on affected devices
Sudden spikes in memory consumption traced to the vibration service
System logs indicating out-of-memory errors or watchdog-triggered restarts tied to haptic components

Detection Strategies

Monitor device telemetry for abnormal termination or restart events involving the vibration service
Correlate crash events with recently opened applications, files, or received messages to identify potential trigger vectors
Track anomalous memory allocation patterns originating from system services on mobile endpoints

Monitoring Recommendations

Enable mobile device management (MDM) reporting for service crash events and integrate logs into central analytics
Alert on repeated user-initiated actions that precede vibration service failures
Review vendor security bulletins on a monthly cadence to catch new advisories tied to this component

How to Mitigate CVE-2026-58559

Immediate Actions Required

Apply firmware updates listed in the Huawei Support Bulletin as soon as they are available for your device model
Restrict installation of untrusted applications that could interact with system services
Advise users to avoid opening unsolicited links, files, or attachments that may trigger the vulnerable code path

Patch Information

Huawei has published remediation guidance in the July 2026 consumer support bulletin. Consult the Huawei Support Bulletin to identify the fixed firmware version for each affected device model. Deploy the vendor-supplied update through the standard system update channel or MDM policy.

Workarounds

Reduce exposure by limiting application installations to trusted, vetted sources
Restart the device if the vibration service becomes unresponsive to restore functionality
Where feasible, disable or restrict components that programmatically invoke the vibration service until patched

bash

# Configuration example
# Vendor-specific configuration guidance is not published in the CVE record.
# Refer to the Huawei Support Bulletin for device-specific update procedures.