CVE-2026-24930 is a concurrency vulnerability classified under CWE-362 (Race Condition) found in the graphics module of Huawei's HarmonyOS versions 5.1.0 and 6.0.0. The flaw is a use-after-free (UAF) condition caused by improper synchronization when multiple threads access shared resources concurrently. This can lead to memory corruption, allowing an attacker to manipulate the system state, potentially causing denial of service or unauthorized data access. The vulnerability requires local access (AV:L) but no privileges (PR:N) or user interaction (UI:N), making it easier to exploit in environments where an attacker has some foothold. The CVSS 3.1 base score is 8.4, indicating high severity with impacts on confidentiality, integrity, and availability. While no public exploits are currently known, the nature of the flaw suggests that attackers could leverage it to disrupt system stability or escalate privileges. The graphics module is critical for rendering and display functions, so exploitation could cause crashes or system instability, affecting device availability. The vulnerability was reserved on 2026-01-28 and published on 2026-02-06, but no patches have been linked yet, emphasizing the need for vigilance and proactive mitigation. Given Huawei's market presence, especially in mobile and IoT devices running HarmonyOS, this vulnerability poses a significant risk to users and organizations relying on these platforms.

For European organizations, this vulnerability could lead to significant operational disruptions, particularly in sectors using Huawei HarmonyOS devices such as telecommunications, manufacturing, and critical infrastructure. The UAF race condition can cause system crashes or allow attackers to corrupt memory, potentially leading to denial of service or unauthorized access to sensitive information. This impacts confidentiality, integrity, and availability of affected systems. Since exploitation requires local access, insider threats or malware that gains initial foothold could escalate impact. The disruption of graphics module functionality could affect user interfaces and system monitoring tools, complicating incident response. Organizations relying on HarmonyOS for IoT or mobile endpoints may face increased risk of downtime and data breaches. The absence of known exploits provides a window for preemptive action, but the high CVSS score signals urgency. The impact is amplified in environments with high device density or critical operational roles for affected devices.

1. Monitor Huawei’s official channels for patches addressing CVE-2026-24930 and apply them immediately upon release. 2. Restrict local access to HarmonyOS devices, enforcing strict physical and logical access controls to minimize attacker foothold. 3. Implement application whitelisting and endpoint detection to identify anomalous behavior in the graphics module or related processes. 4. Conduct regular audits of device configurations and usage to detect unauthorized local access or privilege escalations. 5. Employ network segmentation to isolate critical HarmonyOS devices, limiting lateral movement in case of compromise. 6. Educate users and administrators about the risks of local exploitation and enforce strong authentication mechanisms. 7. Use runtime protection tools capable of detecting race conditions or memory corruption attempts in real time. 8. Prepare incident response plans specifically addressing potential availability impacts from graphics module failures. 9. Collaborate with Huawei support for guidance and early access to fixes or mitigations. 10. For organizations deploying HarmonyOS in IoT or critical infrastructure, consider additional hardware-level protections and redundancy to mitigate availability risks.