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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.0.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "HarmonyOS", "source": "cna", "vendor": "Huawei"}, "product": "harmonyos", "vendor": "huawei"}], "analysis": {"en": {"generated_at": "2026-04-13T08:22:51.778700+00:00", "value": {"mitigation_remediation": ["Obtain and apply the official HarmonyOS patch from Huawei as soon as it is released", "If a patch is not yet available, disable or tightly restrict access to the device\u2019s Web module", "Segment the device from untrusted networks and apply network segmentation controls", "Monitor Huawei\u2019s support portal and security advisories for updates or additional mitigations"], "summary": {"action": "Assess Impact", "impact": "Denial of Service & Confidentiality Breach"}, "threat_synthesis": {"affected_systems": "The flaw affects Huawei HarmonyOS devices. No specific version range is documented in the advisory, so all releases that include the vulnerable WEB module may be affected.", "description_and_impact": "An out\u2011of\u2011bounds write flaw has been found in the WEB module of Huawei HarmonyOS. The vulnerability allows an attacker to corrupt memory, potentially disrupting the operation of the device and exposing sensitive data. The impact manifests as a loss of availability, and the possibility of data leakage, consistent with the CWE\u2011120 classification for buffer overflows.", "risk_and_exploitability": "The CVSS score of 5.1 indicates a moderate risk level. EPSS data is not available, and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is via the web interface of the device; however, the exact remote or local conditions are not specified, so the exploitation requirement is inferred to require access to that module. Given the moderate score and absence of public exploits, the overall threat is manageable but warrants monitoring for potential public exploitation."}}}}, "created": "2026-04-13T12:36:55.464432+00:00", "title": "Out\u2011of\u2011Bounds Write in HarmonyOS WEB Module Leads to Availability and Confidentiality Impact", "updated": "2026-04-13T12:52:43.598515+00:00", "vendors": ["huawei", "huawei$PRODUCT$harmonyos"]}