CVE-2025-68964: Huawei HarmonyOS DOS Vulnerability

CVE-2025-68964 Overview

CVE-2025-68964 is a data verification vulnerability identified in the HiView module of Huawei HarmonyOS. This improper input validation flaw (CWE-20) allows a local attacker with low privileges to cause a denial of service condition by exploiting insufficient data verification mechanisms within the HiView component. Successful exploitation impacts the availability of affected devices without compromising confidentiality or integrity.

Critical Impact
Local attackers can exploit this data verification flaw in the HiView module to cause denial of service, disrupting device availability across HarmonyOS smartphones, laptops, wearables, and vision devices.

Affected Products

Huawei HarmonyOS 5.0.1
Huawei HarmonyOS 5.1.0
Huawei HarmonyOS 5.1.1
Huawei HarmonyOS 6.0.0

Discovery Timeline

January 14, 2026 - CVE-2025-68964 published to NVD
January 15, 2026 - Last updated in NVD database

Technical Details for CVE-2025-68964

Vulnerability Analysis

This vulnerability stems from improper input validation (CWE-20) within the HiView module, a system component in Huawei's HarmonyOS responsible for device diagnostics and telemetry. The HiView module fails to adequately verify data inputs before processing, allowing malformed or unexpected data to trigger abnormal behavior.

The local attack vector indicates that an attacker must have some level of access to the target device. The vulnerability can be exploited without user interaction, making it particularly concerning for multi-user environments or scenarios where devices may be temporarily accessible to untrusted parties.

The primary impact is on system availability. When exploited, the vulnerability can cause the HiView module or related system services to crash or become unresponsive, potentially requiring a device restart to restore normal functionality. This affects the broad range of HarmonyOS devices including smartphones, laptops, smart displays (Vision), and wearable devices.

Root Cause

The root cause is insufficient data verification within the HiView module's input handling routines. The module accepts and processes data without properly validating its format, length, or content against expected parameters. This lack of boundary checking or type validation allows specially crafted input to trigger undefined behavior, resource exhaustion, or service crashes.

Attack Vector

The vulnerability requires local access to exploit. An attacker with low-privilege access to a HarmonyOS device can craft malicious input targeting the HiView module's data processing functions. The attack does not require any user interaction and can be executed by:

Identifying accessible interfaces to the HiView module
Crafting input data that violates expected validation constraints
Submitting the malformed data to trigger the denial of service condition

The exploitation does not require elevated privileges, meaning any authenticated local user could potentially trigger the vulnerability. However, the scope is unchanged, meaning the impact is limited to the vulnerable component itself.

Detection Methods for CVE-2025-68964

Indicators of Compromise

Unexpected crashes or restarts of the HiView module or related system services
Increased system instability or unresponsive device behavior without apparent cause
Error logs indicating data validation failures or exceptions in HiView components
Repeated service restart attempts for HiView-related processes

Detection Strategies

Monitor system logs for HiView module crashes, exceptions, or abnormal termination events
Implement endpoint detection rules to identify patterns of repeated service failures
Track inter-process communication (IPC) calls to HiView for anomalous input patterns
Deploy behavioral analysis to detect local privilege abuse attempts targeting system modules

Monitoring Recommendations

Enable verbose logging for HiView module operations to capture potential exploitation attempts
Configure alerting for service availability metrics on HarmonyOS system components
Review device management console logs for patterns of availability-impacting events
Establish baseline behavior for HiView module resource consumption to detect anomalies

How to Mitigate CVE-2025-68964

Immediate Actions Required

Apply the January 2026 Huawei security patches to all affected HarmonyOS devices immediately
Restrict physical access to devices running vulnerable HarmonyOS versions
Review and limit local user accounts to reduce the potential attack surface
Ensure device management policies enforce timely security updates

Patch Information

Huawei has released security updates addressing this vulnerability in the January 2026 security bulletins. Administrators should consult the appropriate security bulletin for their device type:

Huawei Consumer Security Bulletin for smartphones and tablets
Huawei Laptops Security Bulletin for laptop devices
Huawei Vision Security Bulletin for smart display products
Huawei Wearables Security Bulletin for wearable devices

Update devices to the latest available HarmonyOS version that includes the security fix.

Workarounds

Limit local access to devices by implementing strict physical security controls
Configure device policies to restrict untrusted applications from interacting with system services
Monitor for unusual device behavior and investigate availability incidents promptly
Consider enterprise MDM solutions to enforce security policies and rapid patch deployment

bash

# Verify HarmonyOS version on device
# Navigate to: Settings > About device > Software version
# Ensure security patch level is January 2026 or later

# For enterprise deployments, verify patch status via MDM:
# Check device compliance reports for security update status
# Enforce automatic updates for critical security patches