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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.0.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.1.0"}}], "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": "2026-04-13T06:23:19.648670+00:00", "value": {"mitigation_remediation": ["Check the Huawei consumer support bulletin for a firmware update or patch that addresses the out\u2011of\u2011bounds write issue.", "If a patch is available, apply it to all HarmonyOS devices immediately to prevent availability impact.", "Until a patch is deployed, monitor file system activity and restrict write permissions for non\u2011essential applications to reduce the risk of exploitation."], "summary": {"action": "Patch Now", "impact": "Availability"}, "threat_synthesis": {"affected_systems": "Huawei HarmonyOS devices are impacted. The CVE does not list affected firmware versions, so administrators should consult Huawei\u2019s consumer support bulletin for specific release information and verify whether their installations contain the vulnerability.", "description_and_impact": "The vulnerability is an out\u2011of\u2011bounds write in HarmonyOS\u2019s file system driver. This flaw can corrupt or overwrite critical file system data, potentially leading to system instability or denial of service. The official description notes that successful exploitation may affect availability, which could impede device operation for affected users.", "risk_and_exploitability": "The CVSS base score of 6.7 indicates a moderate severity vulnerability. No EPSS score is available, and the issue is not cataloged in CISA\u2019s Known Exploited Vulnerabilities list, suggesting limited publicly documented exploitation activity. The exact attack vector is not detailed; based on the description, it is inferred that an attacker must trigger the out\u2011of\u2011bounds write, potentially via a malicious file or application, but the official advisory does not disclose the exploit path."}}}}, "created": "2026-04-13T12:37:26.163426+00:00", "title": "Out\u2011of\u2011Bounds Write Vulnerability in HarmonyOS File System", "updated": "2026-04-13T12:53:14.059875+00:00", "vendors": ["huawei", "huawei$PRODUCT$harmonyos"]}