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HarmonyOS CVE-2026-49309

| EUVDEUVD-2026-74616 MEDIUM
Permissions, Privileges, and Access Controls (CWE-264)
2026-09-09 psirt@huawei.com GHSA-89hm-qv2c-76vc
4.8
CVSS 3.1 · Vendor: huawei
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Severity by source

Vendor (huawei) PRIMARY
4.8 MEDIUM
AV:P/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
vuln.today AI
4.8 MEDIUM

Physical access and high complexity reflect Settings UI exploitation; scope change and C:H capture cross-component confidential data exposure with no integrity or availability effect.

3.1 AV:P/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
4.0 AV:P/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

Primary rating from Vendor (huawei).

CVSS VectorVendor: huawei

Attack Vector
Physical
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Sep 09, 2026 - 06:38 vuln.today
CVE Published
Sep 09, 2026 - 04:17 cve.org
MEDIUM 4.8

DescriptionCVE.org

Permission control vulnerability in the Settings module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.

AnalysisAI

Permission control bypass in the Huawei HarmonyOS and EMUI Settings module allows an attacker with physical access to a device to read confidential data from a protected scope beyond the Settings component. The vulnerability affects HarmonyOS versions 4.0.0 through 4.3.3 and EMUI versions 14.0.0 through 16.0.0, as confirmed by Huawei PSIRT via the September 2026 security bulletin. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Physical access to the target device is required (AV:P) - remote exploitation is impossible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is moderate-to-low despite the C:H confidentiality sub-score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the security updates distributed by Huawei in the September 2026 monthly security bulletin, available at https://consumer.huawei.com/en/support/bulletin/2026/9/. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-49309 vulnerability details – vuln.today

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