CVE-2026-34858 | Huawei HarmonyOS 5.1.0/6.0.0 Communication race condition

VDB-357079 · CVE-2026-34858 · GCVE-0-2026-34858 HUAWEI HARMONYOS 5.1.0/6.0.0 COMMUNICATION RACE CONDITION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 0.00+ Summaryinfo A vulnerability identified as problematic has been detected in Huawei HarmonyOS 5.1.0/6.0.0. This affects an unknown function of the component Communication Module. This manipulation causes race condition. The identification of this vulnerability is CVE-2026-34858. The attack can only be executed locally. There is no exploit available. Detailsinfo A vulnerability has been found in Huawei HarmonyOS 5.1.0/6.0.0 and classified as problematic. Affected by this vulnerability is some unknown functionality of the component Communication Module. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect availability. The summary by CVE is: UAF vulnerability in the communication module. Impact: Successful exploitation of this vulnerability may affect availability. It is possible to read the advisory at consumer.huawei.com. This vulnerability is known as CVE-2026-34858 since 03/31/2026. The exploitation appears to be difficult. Attacking locally is a requirement. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not publicly available. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Smartphone Operating System Vendor Huawei Name HarmonyOS Version 5.1.0 6.0.0 License commercial Website Vendor: https://www.huawei.com/ CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.1 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.1 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 4.1 CNA Vector (huawei): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Race condition CWE: CWE-362 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/31/2026 CVE reserved 04/13/2026 +13 days Advisory disclosed 04/13/2026 +0 days VulDB entry created 04/13/2026 +0 days VulDB entry last update Sourcesinfo Vendor: huawei.com Advisory: consumer.huawei.com Status: Confirmed CVE: CVE-2026-34858 (🔒) GCVE (CVE): GCVE-0-2026-34858 GCVE (VulDB): GCVE-100-357079 Entryinfo Created: 04/13/2026 07:41 Changes: 04/13/2026 07:41 (62) Complete: 🔍 Cache ID: 99:F92:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸