EUVD-2026-44658
GHSA-78h5-w2vg-67j7
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Local vector confirmed by card-module scope; PR:N because any unprivileged app can register a card; UI:R because victim interaction with the card is required to trigger the bypass.
Primary rating from Vendor (huawei).
CVSS VectorVendor: huawei
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Lifecycle Timeline
1DescriptionCVE.org
Permission bypass vulnerability in the card module. Impact: Successful exploitation of this vulnerability may affect availability.
AnalysisAI
Permission bypass in the HarmonyOS card module allows a local, unprivileged user - with required user interaction - to circumvent access controls, resulting in high availability impact alongside limited confidentiality and integrity exposure. The vulnerability affects Huawei HarmonyOS across all tracked versions per CPE data and is documented in Huawei's July 2026 security bulletin. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the attacker's malicious card to be present and rendered on the HarmonyOS device - either via side-loading or a third-party card source - and (2) an active user interaction with that card (UI:R), such as tapping or triggering it. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.6 (Medium) reflects a local-only attack vector (AV:L) with no privilege requirement (PR:N) but mandatory user interaction (UI:R), constraining the attack surface to on-device scenarios where a victim interacts with a malicious or compromised card. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A threat actor publishes a malicious HarmonyOS service card through a side-loaded application or a third-party card marketplace; when the device owner adds or interacts with this card on their home screen, the card module's permission enforcement is bypassed, allowing the attacker's card to trigger a high-availability-impact condition - such as crashing a system service - while also gaining limited read or write access to resources the card would not normally be permitted to access. No public exploit code has been identified at time of analysis. |
| Remediation | Consult the Huawei July 2026 security bulletins directly at https://consumer.huawei.com/en/support/bulletin/2026/7/ (for phones and tablets) and https://consumer.huawei.com/en/support/bulletinlaptops/2026/7/ (for laptops) to identify the exact patched HarmonyOS version and apply the available OTA update. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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