Quick answers
- Is CVE-2026-58559 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-58559 being exploited in the wild.
- How severe is CVE-2026-58559?
- Medium severity, with a CVSS score of 6.5, published 15 July 2026.
- Which products and versions are affected?
- Huawei Emui 14.0.0, 14.2.0, 15.0.0; Huawei Harmonyos 4.0.0, 4.2.0, 4.3.0, 4.3.1.
- Is there a fix for CVE-2026-58559?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-58559 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-58559?
- Check whether you run Huawei Emui or Huawei Harmonyos at an affected version. 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 denial-of-service (DoS) vulnerability exists in the vibration service of Huawei HarmonyOS and EMUI. The flaw is categorized as CWE-789 (Memory Allocation with Excessive Size Value), suggesting that the service fails to properly validate the size of memory allocation requests. An attacker can exploit this over the network, though user interaction is required (UI:R), to trigger an out-of-memory condition or service crash. This results in a loss of availability for the vibration functionality. Patches were released as part of the Huawei July 2026 security bulletin.
Affected products
- Huawei HarmonyOS 4.0.0, 4.2.0, 4.3.0, 4.3.1
- Huawei EMUI 14.0.0, 14.2.0, 15.0.0
Timeline
- 2026-07-08: advisory: Initial Huawei security bulletin published
- 2026-07-15: disclosed: NVD publication date