CVE DatabaseCVE-2026-101173

Updated 2026-11-02한국어 권고문 →

CVE-2026-1011736.5/MEDIUMCWE-400

Huawei DSoftBus Denial of Service (DoS) Vulnerability Analysis and Mitigation Guide (CVE-2026-101173)

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Affected Vendors

huawei

Affected Components

dsoftbus, harmonyos

Published Date

2026-11-02

CVSS v3.1

6.5

MEDIUM

EPSS (30d)

0.1%

FIRST.org

CISA KEV

Not Listed

NVD Source ↗

Executive & SecOps Summary

SECOPS ASSESSMENT

Affected Scope

DSoftBus module responsible for distributed communication in Huawei HarmonyOS and associated smart devices

Impact

An adjacent attacker can exploit this vulnerability without authentication to disrupt communication services, leading to a Denial of Service (DoS) state

Mitigation

Apply the official security updates provided by Huawei and disable unnecessary wireless sharing features in untrusted network environments

Affected Products & Version Scope

Huawei HarmonyOS devices utilizing the DSoftBus module (Refer to Huawei's October 2026 Security Bulletin for specific version details)

Remediation & Live Workaround Commands

PATCH & WORKAROUND

1. Official Patch & Version Upgrade Commands

Update your Huawei devices to the latest firmware version via the system settings. For enterprise environments managed under MDM, enforce the update policy using the following administrative commands:

bash

# Example command to trigger immediate system update check via MDM CLI
mdm-cli system update --check-immediate
mdm-cli system update --install-silent --allow-reboot

2. Temporary Workaround & Hardening Configuration

If immediate patching is not feasible, mitigate the attack vector by disabling wireless sharing features such as Wi-Fi Direct, Bluetooth, and Multi-Screen Collaboration when connected to untrusted networks.

bash

# Disabling wireless interfaces via ADB to mitigate adjacent attack vectors
# Disable Bluetooth
adb shell cmd bluetooth_manager disable

# Disable Wi-Fi service
adb shell svc wifi disable

3. Log Audit & IoC Verification Commands

Monitor the system for abnormal CPU spikes or frequent crashes of the DSoftBus daemon (softbus_server) to detect potential exploitation attempts.

bash

# Monitor DSoftBus process status and inspect crash logs via ADB
adb shell 'top -n 1 | grep -i softbus'
adb logcat -d | grep -E -i 'softbus|dsoftbus|crash|fatal'

Interactive SecOps Remediation Checklist

0/4 (0%)

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Technical Root Cause & Exploitation Mechanics

1. Vulnerability Overview & Root Cause

CVE-2026-101173 is a Denial of Service (DoS) vulnerability identified in the DSoftBus (Distributed Software Bus) module of Huawei devices. The root cause lies in improper resource management and insufficient input validation (CWE-400) within the communication framework. When processing specifically crafted network packets, the DSoftBus daemon fails to handle resource allocation properly, leading to resource exhaustion or unexpected process termination.

2. Exploitation Mechanics & Attack Scenario

An attacker must be positioned within the adjacent network (such as the same local Wi-Fi or Bluetooth range) to target the vulnerable device. Since the vulnerability requires no privileges (PR:N) and no user interaction (UI:N), the attacker can transmit malformed protocol packets directly to the listening ports or broadcast channels of the DSoftBus service. This triggers infinite loops or memory exhaustion during packet parsing, causing the communication service to crash and rendering the device unresponsive.

3. Infrastructure & Business Impact

DSoftBus is a critical component enabling multi-device collaboration, file sharing, and screen projection within the Huawei ecosystem. Exploitation of this vulnerability can disrupt smart office environments and industrial IoT setups by severing device-to-device connectivity. While it does not lead to Remote Code Execution (RCE) or data exfiltration, the loss of availability can severely impact business operations and service continuity.

Official Vendor Advisories & References

NVD Original English Description

DoS vulnerability in the DSoftBus module. Impact: Successful exploitation of this vulnerability may affect availability.

https://consumer.huawei.com/en/support/bulletin/2026/10/

Source: psirt@huawei.com

https://consumer.huawei.com/en/support/bulletinvision/2026/10/

Source: psirt@huawei.com

Frequently Asked SecOps Questions (CVE-2026-101173)

FAQ

Q1. How critical is CVE-2026-101173 and is it actively exploited in the wild?

CVE-2026-101173 is rated CVSS 6.5 (MEDIUM) with a 30-day EPSS exploitation probability of 0.1%. Organizations running affected versions should prioritize patching based on network exposure.

Q2. Which vendors and products are affected by CVE-2026-101173?

Primary impacted vendors include huawei across dsoftbus, harmonyos. Scope summary: Huawei HarmonyOS devices utilizing the DSoftBus module (Refer to Huawei's October 2026 Security Bulletin for specific version details)

Q3. What temporary mitigations or workarounds exist for CVE-2026-101173 before patching?

[Mitigation] Apply the official security updates provided by Huawei and disable unnecessary wireless sharing features in untrusted network environments Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.

SECOPS WORKBENCH INTEGRATION