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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Double free vulnerability in the multi-mode input system.\nImpact: Successful exploitation of this vulnerability may affect availability."}], "id": "CVE-2026-34867", "lastModified": "2026-04-13T04:16:13.240", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 4.2, "source": "psirt@huawei.com", "type": "Secondary"}]}, "published": "2026-04-13T04:16:13.240", "references": [{"source": "psirt@huawei.com", "url": "https://consumer.huawei.com/en/support/bulletin/2026/4/"}, {"source": "psirt@huawei.com", "url": "https://consumer.huawei.com/en/support/bulletinlaptops/2026/4/"}], "sourceIdentifier": "psirt@huawei.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}], "source": "psirt@huawei.com", "type": "Secondary"}]}

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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": "2026-04-13T06:27:04.119853+00:00", "value": {"mitigation_remediation": ["Check Huawei\u2019s support bulletin for HarmonyOS April\u202f2026 and install any released security update that addresses the double\u2011free flaw", "If an update is not yet available, consider disabling the multi\u2011mode input functionality or restricting its use to unprivileged contexts until a patch can be applied"], "summary": {"action": "Apply Patch", "impact": "Availability (Denial of Service)"}, "threat_synthesis": {"affected_systems": "The vulnerability affects devices running Huawei HarmonyOS. No explicit version information is provided in the advisory, so system administrators should reference Huawei\u2019s support bulletin dated April\u202f2026 to determine if their installation requires an update.", "description_and_impact": "A double\u2011free defect has been found in Huawei HarmonyOS\u2019s multi\u2011mode input system. The flaw enables a crafted input to trigger a second deallocation of memory that was already freed, leading to undefined behavior that typically results in an application crash or a system reset. This causes loss of service rather than exposure or modification of data, and the weakness aligns with CWE\u2011415, describing improper memory management.", "risk_and_exploitability": "With a CVSS score of 5.6 the issue is considered moderate in severity. Because no EPSS data is available and the bug is not listed in CISA\u2019s KEV catalog, it is unlikely to be actively exploited at this time. The description does not specify an attack vector; therefore, it is inferred that an attacker would need to deliver malicious input to the vulnerable subsystem, probably through local or privileged access to the device. The risk is thus modest, pending the availability of an exploit. "}}}}, "created": "2026-04-13T12:37:40.299279+00:00", "title": "Double\u2011Free Vulnerability in HarmonyOS Multi\u2011Mode Input System", "updated": "2026-04-13T12:53:27.779075+00:00", "vendors": ["huawei", "huawei$PRODUCT$harmonyos"]}