Quick answers
- Is CVE-2026-34859 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-34859 being exploited in the wild.
- How severe is CVE-2026-34859?
- Medium severity, with a CVSS score of 5.9, published 13 April 2026.
- Which products and versions are affected?
- Huawei HarmonyOS 4.2.0, 4.3.0; Huawei EMUI 14.2.0, 15.0.0.
- Is there a fix for CVE-2026-34859?
- A patch was published on 2026-04-08: Huawei released security bulletin updates. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-34859 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-34859?
- Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A Use-After-Free (UAF) vulnerability (CWE-416) exists within the kernel module of Huawei's HarmonyOS and EMUI operating systems. The flaw is triggered when the system continues to use a memory pointer after it has been freed, which can be exploited by a local attacker with low privileges. Successful exploitation allows the attacker to compromise system confidentiality and availability, potentially leading to arbitrary code execution or a denial-of-service (DoS) condition. The vulnerability was addressed in the April 2026 security bulletin.
Affected products
- Huawei HarmonyOS 4.2.0, 4.3.0
- Huawei EMUI 14.2.0, 15.0.0
Timeline
- 2026-04-08: patched: Huawei released security bulletin updates.
- 2026-04-13: disclosed: Initial CVE publication.
- 2026-04-15: advisory: NVD updated with NIST analysis and CVSS scoring.