CVE-2026-58551 Overview
CVE-2026-58551 is an out-of-bounds read vulnerability in the image codec module affecting Huawei consumer products. The flaw is categorized under [CWE-120] (Buffer Copy without Checking Size of Input). Successful exploitation may affect service confidentiality by allowing an attacker with local access to read memory outside allocated buffer boundaries. Huawei disclosed the issue across four security bulletins covering consumer devices, laptops, vision products, and wearables. The vulnerability requires local access, no privileges, and no user interaction, but its impact is limited to partial confidentiality and availability effects.
Critical Impact
Local attackers can trigger out-of-bounds reads in the image codec module, potentially exposing sensitive memory contents and affecting device availability.
Affected Products
- Huawei consumer devices (per Huawei Security Bulletin – Consumer, July 2026)
- Huawei laptops (per Huawei Security Bulletin – Laptops, July 2026)
- Huawei Vision and Wearables products (per corresponding July 2026 bulletins)
Discovery Timeline
- 2026-07-15 - CVE-2026-58551 published to NVD
- 2026-07-15 - Last updated in NVD database
Technical Details for CVE-2026-58551
Vulnerability Analysis
The vulnerability resides in the image codec module responsible for decoding image data on affected Huawei devices. When the codec parses a crafted image, it reads memory beyond the intended buffer boundary. This out-of-bounds read can expose adjacent memory contents to the calling process.
The attack vector is local, meaning the attacker must run code or deliver a malicious image to an application processing images on the device. No authentication or user interaction is required to trigger the flaw. The scope is unchanged, and the impact is limited to partial confidentiality and availability.
The EPSS probability is 0.088% at the 49.7 percentile, indicating a low near-term likelihood of active exploitation.
Root Cause
The root cause aligns with [CWE-120]: the image codec performs a buffer copy or read without adequately validating input size against the destination or source buffer boundaries. Malformed image dimensions, header fields, or chunk lengths can cause the parser to read past allocated memory. Refer to the Huawei Security Bulletin – Consumer for vendor-specific technical context.
Attack Vector
An attacker requires local access to the target device. Exploitation typically involves supplying a crafted image file to any application that invokes the vulnerable codec. Because no privileges or user interaction are required, any process capable of invoking the codec can trigger the read. The disclosed memory may contain sensitive process data, though the vulnerability does not, by itself, allow code execution or integrity impact.
No public proof-of-concept code has been published for this issue. Technical details are described in prose only; consult the Huawei Security Bulletin – Laptops for additional guidance.
Detection Methods for CVE-2026-58551
Indicators of Compromise
- Unexpected crashes, hangs, or abnormal termination of applications invoking the image codec module.
- Anomalous image files with malformed headers, invalid dimensions, or oversized chunk lengths present in application caches.
- Kernel or system logs referencing faults in image decoding libraries on affected Huawei devices.
Detection Strategies
- Monitor system crash telemetry for repeated faults originating from image decoding libraries.
- Inspect image files sourced from untrusted origins using file validation and parser fuzzing tools.
- Correlate application errors with the delivery of image attachments or downloaded media on affected devices.
Monitoring Recommendations
- Enable and centralize device crash reporting from Huawei consumer, laptop, Vision, and Wearables products.
- Track installation of the July 2026 Huawei security update across the managed device fleet.
- Review inbound file transfer channels (messaging, email, sync) for anomalous image payloads.
How to Mitigate CVE-2026-58551
Immediate Actions Required
- Apply the July 2026 Huawei security update on all affected consumer devices, laptops, Vision products, and wearables.
- Verify device firmware and system version against the fix levels listed in the vendor bulletins.
- Restrict the processing of untrusted image files on unpatched devices until the update is deployed.
Patch Information
Huawei published fixes in the July 2026 security bulletins. Refer to the Huawei Security Bulletin – Consumer, Huawei Security Bulletin – Laptops, Huawei Security Bulletin – Vision, and Huawei Security Bulletin – Wearables for the corresponding fixed versions and update instructions.
Workarounds
- Avoid opening image files from untrusted sources on unpatched devices.
- Disable automatic image preview in messaging and email applications where feasible.
- Limit installation of third-party applications that invoke the image codec module until patches are applied.
# Configuration example: verify system update status on affected Huawei devices
# 1. Navigate to Settings > System & updates > Software update
# 2. Confirm build date is on or after the July 2026 security patch level
# 3. Apply pending updates before processing untrusted image content
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
