{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34858", "assignerOrgId": "25ac1063-e409-4190-8079-24548c77ea2e", "state": "PUBLISHED", "assignerShortName": "huawei", "dateReserved": "2026-03-31T01:11:13.701Z", "datePublished": "2026-04-13T04:06:22.252Z", "dateUpdated": "2026-04-13T13:28:06.171Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "25ac1063-e409-4190-8079-24548c77ea2e", "shortName": "huawei", "dateUpdated": "2026-04-13T04:06:22.252Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-362", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')", "type": "CWE"}]}], "affected": [{"vendor": "Huawei", "product": "HarmonyOS", "versions": [{"status": "affected", "version": "6.0.0"}, {"status": "affected", "version": "5.1.0"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "UAF vulnerability in the communication module.\nImpact: Successful exploitation of this vulnerability may affect availability.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "UAF vulnerability in the communication module.<br>Impact: Successful exploitation of this vulnerability may affect availability."}]}], "references": [{"url": "https://consumer.huawei.com/en/support/bulletin/2026/4/"}, {"url": "https://consumer.huawei.com/en/support/bulletinvision/2026/4/"}, {"url": "https://consumer.huawei.com/en/support/bulletinwearables/2026/4/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 4.1, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-13T13:27:58.981830Z", "id": "CVE-2026-34858", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-13T13:28:06.171Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-34858", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-13T13:27:58.981830Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-13T13:28:03.303Z"}}], "cna": {"source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.1, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Huawei", "product": "HarmonyOS", "versions": [{"status": "affected", "version": "6.0.0"}, {"status": "affected", "version": "5.1.0"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://consumer.huawei.com/en/support/bulletin/2026/4/"}, {"url": "https://consumer.huawei.com/en/support/bulletinvision/2026/4/"}, {"url": "https://consumer.huawei.com/en/support/bulletinwearables/2026/4/"}], "x_generator": {"engine": "Vulnogram 1.0.1"}, "descriptions": [{"lang": "en", "value": "UAF vulnerability in the communication module.\nImpact: Successful exploitation of this vulnerability may affect availability.", "supportingMedia": [{"type": "text/html", "value": "UAF vulnerability in the communication module.<br>Impact: Successful exploitation of this vulnerability may affect availability.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-362", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}], "providerMetadata": {"orgId": "25ac1063-e409-4190-8079-24548c77ea2e", "shortName": "huawei", "dateUpdated": "2026-04-13T04:06:22.252Z"}}}, "cveMetadata": {"cveId": "CVE-2026-34858", "state": "PUBLISHED", "dateUpdated": "2026-04-13T13:28:06.171Z", "dateReserved": "2026-03-31T01:11:13.701Z", "assignerOrgId": "25ac1063-e409-4190-8079-24548c77ea2e", "datePublished": "2026-04-13T04:06:22.252Z", "assignerShortName": "huawei"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:huawei:harmonyos:5.1.0:*:*:*:*:*:*:*", "matchCriteriaId": "E39DE6A6-CBE6-4086-93CD-113D1B3BA730", "vulnerable": true}, {"criteria": "cpe:2.3:o:huawei:harmonyos:5.1.1:*:*:*:*:*:*:*", "matchCriteriaId": "081B7AE1-10B8-45DD-813D-315E5CF51EBB", "vulnerable": true}, {"criteria": "cpe:2.3:o:huawei:harmonyos:6.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "0EBE30DD-E146-4A6A-BE68-DEF9D4D0B2A8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "UAF vulnerability in the communication module.\nImpact: Successful exploitation of this vulnerability may affect availability."}], "id": "CVE-2026-34858", "lastModified": "2026-04-15T20:13:50.540", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 0.5, "impactScore": 3.6, "source": "psirt@huawei.com", "type": "Secondary"}]}, "published": "2026-04-13T05:16:03.663", "references": [{"source": "psirt@huawei.com", "tags": ["Vendor Advisory"], "url": "https://consumer.huawei.com/en/support/bulletin/2026/4/"}, {"source": "psirt@huawei.com", "tags": ["Vendor Advisory"], "url": "https://consumer.huawei.com/en/support/bulletinvision/2026/4/"}, {"source": "psirt@huawei.com", "tags": ["Vendor Advisory"], "url": "https://consumer.huawei.com/en/support/bulletinwearables/2026/4/"}], "sourceIdentifier": "psirt@huawei.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "psirt@huawei.com", "type": "Secondary"}]}

{}

{"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": "2026-04-13T06:53:24.398216+00:00", "value": {"mitigation_remediation": ["Apply any firmware or OS patch released by Huawei for HarmonyOS when it becomes available.", "If no patch is available, inhibit or restrict applications that interact directly with the communication module, if possible.", "Monitor device logs for signs of anomalous behavior or crashes that could indicate exploitation attempts.", "Keep the device firmware and OS updated to the latest supported versions and enable automatic updates whenever possible."], "summary": {"action": "Monitor", "impact": "Availability Impact"}, "threat_synthesis": {"affected_systems": "Huawei HarmonyOS devices such as consumer phones, smart wearables, and other embedded systems running the HarmonyOS operating system are affected. The advisory does not list any specific product versions.", "description_and_impact": "The vulnerability disclosed is a use\u2011after\u2011free condition located in the communication module of Huawei HarmonyOS. Successful exploitation may result in the loss of availability for the affected module or service. The weakness is identified as a race\u2011condition error (CWE\u2011362).", "risk_and_exploitability": "The CVSS score of 4.1 indicates a low to moderate risk with respect to availability impact. EPSS data is not available, and the vulnerability is not listed in the CISA KEV catalog. The exact attack vector is not specified; however, a use\u2011after\u2011free in a low\u2011level communication component generally requires either local input or the ability to send crafted messages to the device. Because no public exploit is documented, the current threat level is considered low, but monitoring for new developments remains prudent."}}}}, "created": "2026-04-13T12:37:30.039602+00:00", "title": "Use\u2011After\u2011Free in HarmonyOS Communication Module Impacting Availability", "updated": "2026-04-13T12:53:18.056662+00:00", "vendors": ["huawei", "huawei$PRODUCT$harmonyos"]}