CVE-2026-28542
Published: 05 March 2026
Summary
CVE-2026-28542 is a high-severity Improper Handling of Exceptional Conditions (CWE-755) vulnerability in Huawei Emui. Its CVSS base score is 7.3 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 0.8th 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 AC-3 (Access Enforcement) and AC-6 (Least Privilege).
Deeper analysis
CVE-2026-28542 is a permission bypass vulnerability in the system service framework affecting Huawei consumer devices, including wearables. Published on 2026-03-05, it carries a CVSS v3.1 base score of 7.3 (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L) and is associated with CWE-755 (NVD-CWE-noinfo). The vulnerability enables improper enforcement of permissions, with successful exploitation potentially impacting availability alongside other effects indicated by the CVSS vector.
A local attacker requires only local access to the system, with low attack complexity, no privileges, and no user interaction. Exploitation can result in high confidentiality impact through unauthorized access to sensitive data, alongside low impacts to integrity and availability.
Huawei has published security bulletins in March 2026 for consumer products and wearables, available at https://consumer.huawei.com/en/support/bulletin/2026/3/ and https://consumer.huawei.com/en/support/bulletinwearables/2026/3/, which provide details on patches and mitigation measures.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-9812
Vulnerability details
Permission bypass vulnerability in the system service framework. Impact: Successful exploitation of this vulnerability may affect availability.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Permission bypass in system service framework allows local unprivileged attacker to obtain unauthorized sensitive data access (maps to T1005) and achieve effective privilege escalation via exploitation (maps to T1068).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly enforces access control policies to block the permission bypass in the system service framework.
Limits privileges so that successful bypass yields minimal unauthorized access to sensitive data.
Requires timely application of Huawei patches that correct the permission enforcement flaw.