CVE-2026-24929 is a vulnerability identified in Huawei's HarmonyOS 6.0.0, specifically within its graphics module. The issue is classified as a NULL pointer dereference (CWE-476), which typically occurs when the software attempts to read or write to a memory location through a pointer that is null or uninitialized. This particular flaw manifests as an out-of-bounds read, meaning the system reads memory outside the intended buffer boundaries. Such behavior can lead to unpredictable system states, including crashes or denial of service (DoS) conditions, thereby affecting system availability. The vulnerability has a CVSS 3.1 base score of 5.9, indicating a medium severity level. The vector string (AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) shows that the attack requires local access (AV:L), low attack complexity (AC:L), no privileges (PR:N), and no user interaction (UI:N). The scope is unchanged (S:U), with low impact on confidentiality (C:L), integrity (I:L), and availability (A:L). No known exploits have been reported in the wild, and no patches have been publicly released yet. The vulnerability could be leveraged by an attacker with local access to cause system instability or crashes, potentially disrupting services on devices running HarmonyOS 6.0.0. Given Huawei's significant market presence in mobile and IoT devices, this vulnerability could affect a broad range of endpoints.

For European organizations, the primary impact of CVE-2026-24929 lies in potential availability disruptions on devices running HarmonyOS 6.0.0. This could affect mobile devices, IoT endpoints, or embedded systems that rely on Huawei's OS, leading to service interruptions or device crashes. While confidentiality and integrity impacts are low, availability issues can disrupt business operations, especially in sectors relying on Huawei hardware for critical communications or industrial control. The vulnerability requires local access, which limits remote exploitation but raises concerns in environments where devices are physically accessible or shared among multiple users. The absence of known exploits reduces immediate risk, but unpatched systems remain vulnerable. European organizations with Huawei device deployments in telecommunications, manufacturing, or smart infrastructure could face operational challenges if this vulnerability is exploited.

Organizations should implement a multi-layered mitigation approach. First, monitor Huawei's official channels for security advisories and patches addressing CVE-2026-24929 and apply updates promptly once available. Until patches are released, restrict physical and local access to devices running HarmonyOS 6.0.0 to trusted personnel only. Employ device management solutions to inventory and monitor Huawei devices, ensuring vulnerable versions are identified and isolated if possible. Consider deploying endpoint protection tools capable of detecting abnormal application crashes or behaviors indicative of exploitation attempts. For critical environments, evaluate the feasibility of temporarily replacing or segmenting affected devices to minimize exposure. Additionally, conduct user awareness training to reduce risks of unauthorized local access. Finally, maintain robust incident response plans to quickly address any availability disruptions stemming from this vulnerability.