# CVE-2026-34854: Huawei HarmonyOS and EMUI Use-After-Free in kernel module

Source: https://junglewise.ai/threats/cve-2026-34854-huawei-harmonyos-and-emui-use-after-free-in-kernel-module  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-13. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2026-34854 · Severity: medium · CVSS 5.7 · Published 2026-04-13

A security vulnerability exists in the core operating system software of Huawei smartphones and tablets. If exploited, this flaw could allow an attacker to crash the device or access sensitive information that should be protected. This could lead to service disruptions or the unauthorized viewing of private user data.

## Quick answers

**Is CVE-2026-34854 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-34854 being exploited in the wild.

**How severe is CVE-2026-34854?** Medium severity, with a CVSS score of 5.7, published 13 April 2026.

**Which products and versions are affected?** Huawei HarmonyOS 4.0.0, 4.2.0, 4.3.0, 4.3.1, 5.1.0, 6.0.0; Huawei EMUI 14.0.0, 14.2.0, 15.0.0.

**Is there a fix for CVE-2026-34854?** A patch was published on 2026-04-15: NVD analysis and CPE information updated Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-34854 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-34854?** 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 (CWE-416) vulnerability exists within the kernel module of Huawei's HarmonyOS and EMUI operating systems. The flaw is triggered when the system attempts to use memory after it has been freed, which can be exploited by a local attacker with high privileges. Successful exploitation allows the attacker to compromise the confidentiality of system data or cause a denial-of-service (DoS) condition by affecting system availability. The vulnerability is addressed in the April 2026 security update for affected Huawei flagship models.

## Affected products

- Huawei HarmonyOS 4.0.0, 4.2.0, 4.3.0, 4.3.1, 5.1.0, 6.0.0
- Huawei EMUI 14.0.0, 14.2.0, 15.0.0

## Timeline

- 2026-04-13: disclosed
- 2026-04-13: advisory: Initial advisory published by Huawei
- 2026-04-15: patched: NVD analysis and CPE information updated

## References

- [https://consumer.huawei.com/en/support/bulletin/2026/4/](https://consumer.huawei.com/en/support/bulletin/2026/4/)