CVE-2026-24925 Overview
CVE-2026-24925 is a heap-based buffer overflow vulnerability affecting the image module in Huawei HarmonyOS. This memory corruption vulnerability occurs when the image processing component fails to properly validate buffer boundaries during image parsing operations, potentially allowing an attacker to trigger a denial of service condition by crafting malicious image files.
Critical Impact
Successful exploitation of this vulnerability may affect system availability, causing application crashes or system instability on affected HarmonyOS devices.
Affected Products
- Huawei HarmonyOS 5.1.0
- Huawei HarmonyOS 6.0.0
Discovery Timeline
- 2026-02-06 - CVE CVE-2026-24925 published to NVD
- 2026-02-10 - Last updated in NVD database
Technical Details for CVE-2026-24925
Vulnerability Analysis
This heap-based buffer overflow vulnerability (CWE-122, CWE-787) exists in the image module of HarmonyOS. The vulnerability is triggered locally, requiring an attacker to have local access to the device with low privileges. No user interaction is required to exploit this flaw.
The vulnerability allows an attacker to write data beyond the allocated heap buffer boundaries during image processing operations. While the impact is limited to availability (denial of service), heap overflows can potentially be leveraged for more severe attacks in certain configurations.
Root Cause
The root cause of CVE-2026-24925 is improper bounds checking within the image module's memory allocation and data handling routines. When processing specially crafted image data, the module fails to properly validate the size of input data against the allocated buffer size, resulting in an out-of-bounds write condition (CWE-787) on the heap.
Attack Vector
The attack requires local access to the target HarmonyOS device. An attacker with low-level privileges can exploit this vulnerability by introducing a maliciously crafted image file that, when processed by the image module, triggers the heap buffer overflow. This could occur through various means such as opening a malicious image file, receiving an image through messaging applications, or browsing content containing embedded images.
The vulnerability mechanism involves the image parsing routine allocating a heap buffer based on expected image dimensions or metadata, then writing decoded image data without properly validating that the data fits within the allocated buffer boundaries. See the Huawei Security Bulletin 2026-2 for additional technical details.
Detection Methods for CVE-2026-24925
Indicators of Compromise
- Unexpected crashes or restarts of image processing applications on HarmonyOS devices
- System logs showing heap corruption or memory access violations in the image module
- Presence of suspicious or malformed image files on the device
Detection Strategies
- Monitor system logs for heap corruption errors or segmentation faults related to image processing components
- Implement file integrity monitoring to detect suspicious image files with anomalous headers or metadata
- Deploy endpoint detection solutions capable of identifying memory corruption exploitation attempts
Monitoring Recommendations
- Enable verbose logging for the HarmonyOS image module to capture processing errors
- Monitor for application crashes that correlate with image file access operations
- Review device health metrics for unexpected spikes in memory usage or process terminations
How to Mitigate CVE-2026-24925
Immediate Actions Required
- Apply the latest HarmonyOS security updates from Huawei as soon as they become available
- Restrict the installation of applications from untrusted sources
- Exercise caution when opening image files from unknown or untrusted sources
Patch Information
Huawei has addressed this vulnerability in their February 2026 security bulletin. Users should update their HarmonyOS devices to the latest available version to receive the security fix. Refer to the Huawei Security Bulletin 2026-2 and Huawei Laptops Security Bulletin 2026-2 for official patch information and update instructions.
Workarounds
- Avoid opening image files from untrusted or unknown sources until patches are applied
- Use device management policies to restrict image processing applications where feasible
- Consider disabling automatic image preview features in messaging and email applications
# Check current HarmonyOS version and apply updates
# Navigate to: Settings > System & updates > Software update
# Ensure automatic updates are enabled for security patches
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
