CVE-2026-34857: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Huawei HarmonyOS
CVE-2026-34857 is a use-after-free (UAF) vulnerability in the communication module of Huawei HarmonyOS versions 5. 1. 0 and 6. 0. 0. It is caused by improper synchronization leading to a race condition (CWE-362). Successful exploitation may impact system availability. The vulnerability has a CVSS 3. 1 base score of 4. 7, indicating medium severity.
AI Analysis
Technical Summary
This vulnerability in Huawei HarmonyOS arises from a race condition due to improper synchronization in the communication module, resulting in a use-after-free condition. The flaw can lead to availability issues if exploited. The affected versions are 5.1.0 and 6.0.0. The CVSS vector indicates that exploitation requires local access with high privileges and high attack complexity, without user interaction, and impacts availability with low confidentiality impact and no integrity impact. No patch or official remediation level is currently documented.
Potential Impact
Exploitation of this vulnerability may cause denial of service or other availability disruptions on affected HarmonyOS devices. Confidentiality and integrity impacts are minimal or none. The attack requires local access with high privileges and is complex to execute, limiting the risk to some extent.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is documented, users should monitor Huawei's advisories for updates. Until a patch is available, limiting local privileged access and avoiding untrusted code execution on affected versions may reduce risk.
CVE-2026-34857: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Huawei HarmonyOS
Description
CVE-2026-34857 is a use-after-free (UAF) vulnerability in the communication module of Huawei HarmonyOS versions 5. 1. 0 and 6. 0. 0. It is caused by improper synchronization leading to a race condition (CWE-362). Successful exploitation may impact system availability. The vulnerability has a CVSS 3. 1 base score of 4. 7, indicating medium severity.
CVSS v3.1
Score 4.7medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Huawei HarmonyOS arises from a race condition due to improper synchronization in the communication module, resulting in a use-after-free condition. The flaw can lead to availability issues if exploited. The affected versions are 5.1.0 and 6.0.0. The CVSS vector indicates that exploitation requires local access with high privileges and high attack complexity, without user interaction, and impacts availability with low confidentiality impact and no integrity impact. No patch or official remediation level is currently documented.
Potential Impact
Exploitation of this vulnerability may cause denial of service or other availability disruptions on affected HarmonyOS devices. Confidentiality and integrity impacts are minimal or none. The attack requires local access with high privileges and is complex to execute, limiting the risk to some extent.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation is documented, users should monitor Huawei's advisories for updates. Until a patch is available, limiting local privileged access and avoiding untrusted code execution on affected versions may reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- huawei
- Date Reserved
- 2026-03-31T01:11:13.701Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dc7c4582d89c981f24c1d6
Added to database: 4/13/2026, 5:16:53 AM
Last enriched: 4/20/2026, 6:28:57 AM
Last updated: 5/29/2026, 12:58:04 PM
Views: 45
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.