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Wasm exception capture vulnerability in the arkweb v8 module
Impact: Successful exploitation of this vulnerability may cause the failure to capture specific Wasm exception types.

CVE-2025-48905 is a high-severity vulnerability affecting Huawei's HarmonyOS version 5.0.0, specifically within the arkweb V8 module responsible for WebAssembly (Wasm) execution. The vulnerability is categorized under CWE-1068, which denotes an inconsistency between the implementation and the documented design. Technically, this flaw manifests as a failure to properly capture certain Wasm exception types during runtime. WebAssembly is a low-level bytecode format designed to run code efficiently in various environments, including embedded systems and operating systems like HarmonyOS. The arkweb V8 module acts as the JavaScript and Wasm engine, and improper exception handling can lead to unpredictable behavior. The CVSS 3.1 score of 8.1 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H) indicates that the vulnerability is remotely exploitable over the network without requiring privileges or user interaction, but with high attack complexity. Successful exploitation could lead to a complete compromise of confidentiality, integrity, and availability of the affected system. The vulnerability arises because the implementation does not align with the documented design for Wasm exception handling, potentially allowing attackers to bypass exception capture mechanisms. This could enable attackers to execute arbitrary code, cause denial of service, or leak sensitive information by manipulating Wasm exceptions that the system fails to handle correctly. No patches or known exploits in the wild have been reported yet, but the severity and nature of the flaw suggest that exploitation could be impactful once weaponized.

Detailed information about CVE-2025-48905: CWE-1068 Inconsistency Between Implementation and Documented Design in Huawei HarmonyOS affecting Huawei HarmonyOS. G

CVE-2025-48905: CWE-1068 Inconsistency Between Implementation and Documented Design in Huawei HarmonyOS - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-48905: CWE-1068 Inconsistency Between Implementation and Documented Design in Huawei HarmonyOS

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