CVE-2024-56446
Published: 08 January 2025
Summary
CVE-2024-56446 is a medium-severity Use of Uninitialized Variable (CWE-457) vulnerability in Huawei Harmonyos. Its CVSS base score is 4.0 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 23.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-2 (Flaw Remediation) and SI-11 (Error Handling).
Deeper analysis
CVE-2024-56446 is a vulnerability involving variables not being initialized in the notification module of Huawei consumer products. Published on January 8, 2025, it carries a CVSS v3.1 base score of 4.0 (AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L) and maps to CWE-457 (Use of Uninitialized Variable) and CWE-908 (Use of Uninitialized Resource). Successful exploitation impacts availability.
A local attacker can exploit this vulnerability with low complexity, no required privileges, and no user interaction. Exploitation disrupts availability, potentially leading to denial-of-service conditions in the affected notification module.
Huawei has published a support bulletin at https://consumer.huawei.com/en/support/bulletin/2025/1/ addressing this issue, which security practitioners should consult for mitigation details and available patches.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-53155
Vulnerability details
Vulnerability of variables not being initialized in the notification module Impact: Successful exploitation of this vulnerability may affect availability.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Uninitialized variable in local notification module directly enables application/system crash for availability impact via exploitation.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly mitigates the CVE by requiring identification, prioritization, and timely remediation of flaws like uninitialized variables through vendor patches.
Implements runtime memory protections such as ASLR and DEP to mitigate exploitation of uninitialized variable use leading to crashes or DoS.
Ensures errors from uninitialized variables in the notification module are handled gracefully without compromising system availability.