CVE-2026-34853: CWE-270 Privilege context switching error in Huawei HarmonyOS
CVE-2026-34853 is a high-severity permission bypass vulnerability in the Location-Based Services (LBS) module of Huawei HarmonyOS versions 4. 0. 0 through 4. 3. 1. It involves a privilege context switching error (CWE-270) that may allow an attacker with high privileges and user interaction to bypass permissions, potentially impacting system availability. The vulnerability has a CVSS 3. 1 base score of 7. 7, indicating significant risk. No official patch or remediation guidance is currently available from the vendor.
AI Analysis
Technical Summary
This vulnerability in Huawei HarmonyOS affects the LBS module due to a privilege context switching error classified as CWE-270. It allows permission bypass under certain conditions, requiring local access with high privileges and user interaction. The vulnerability impacts confidentiality, integrity, and availability with a CVSS score of 7.7. Affected versions include 4.0.0, 4.2.0, 4.3.0, and 4.3.1. No patch or official remediation level has been published by Huawei as of the data provided.
Potential Impact
Successful exploitation may lead to permission bypass in the LBS module, which can affect system availability. The CVSS vector indicates high impact on confidentiality, integrity, and availability, but exploitation requires local access with high privileges and user interaction. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit access to affected systems to trusted users with high privileges and monitor for unusual activity related to the LBS module. Avoid unnecessary user interactions that could trigger exploitation.
CVE-2026-34853: CWE-270 Privilege context switching error in Huawei HarmonyOS
Description
CVE-2026-34853 is a high-severity permission bypass vulnerability in the Location-Based Services (LBS) module of Huawei HarmonyOS versions 4. 0. 0 through 4. 3. 1. It involves a privilege context switching error (CWE-270) that may allow an attacker with high privileges and user interaction to bypass permissions, potentially impacting system availability. The vulnerability has a CVSS 3. 1 base score of 7. 7, indicating significant risk. No official patch or remediation guidance is currently available from the vendor.
CVSS v3.1
Score 7.7high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Huawei HarmonyOS affects the LBS module due to a privilege context switching error classified as CWE-270. It allows permission bypass under certain conditions, requiring local access with high privileges and user interaction. The vulnerability impacts confidentiality, integrity, and availability with a CVSS score of 7.7. Affected versions include 4.0.0, 4.2.0, 4.3.0, and 4.3.1. No patch or official remediation level has been published by Huawei as of the data provided.
Potential Impact
Successful exploitation may lead to permission bypass in the LBS module, which can affect system availability. The CVSS vector indicates high impact on confidentiality, integrity, and availability, but exploitation requires local access with high privileges and user interaction. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit access to affected systems to trusted users with high privileges and monitor for unusual activity related to the LBS module. Avoid unnecessary user interactions that could trigger exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- huawei
- Date Reserved
- 2026-03-31T01:11:13.700Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dc6aaf82d89c981fecb075
Added to database: 4/13/2026, 4:01:51 AM
Last enriched: 4/20/2026, 6:22:07 AM
Last updated: 5/28/2026, 10:02:00 AM
Views: 85
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