CVE-2026-28538

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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": "2026-04-16T12:28:50.196598+00:00", "value": {"mitigation_remediation": ["Apply the official HarmonyOS security patch that addresses the path traversal in the certificate management module for all affected OS versions.", "If a patch is not yet available, disable or restrict access to the certificate management functionality until the fix is applied.", "Validate that the file system permissions for certificate directories are set to prevent traversal and monitor logs for anomalous certificate upload attempts."], "summary": {"action": "Apply Patch", "impact": "Availability Impact"}, "threat_synthesis": {"affected_systems": "Huawei HarmonyOS 5.1.0 and HarmonyOS 6.0.0 are affected. The flaw exists in the certificate management component of these operating system releases, which is responsible for handling user and system certificates.", "description_and_impact": "The vulnerability is a path traversal flaw in Huawei HarmonyOS\u2019s certificate management module. It allows an attacker to navigate outside the intended directory hierarchy when managing certificates. The primary impact of a successful exploit is a denial of service, potentially disrupting the functionality of the certificate module and thereby affecting broader system availability. The weakness is classified as CWE\u201122 (Path Traversal) and CWE\u201124 (Absolute Path Traversal).", "risk_and_exploitability": "The CVSS score is 5.9, indicating a moderate severity. The EPSS score is less than 1\u202f%, reflecting a very low probability of exploitation in the wild. The vulnerability is not listed in CISA\u2019s KEV catalog. The attack vector is likely local or remote with prior authentication, as the certificate management module is typically accessed via the system interface; however, the exact vector is not explicitly documented and is inferred from the nature of the flaw."}}}}, "created": "2026-03-06T15:07:54.521304+00:00", "title": "Path Traversal in HarmonyOS Certificate Management Leading to Availability Issues", "updated": "2026-04-16T12:30:06.121659+00:00", "vendors": ["huawei", "huawei$PRODUCT$harmonyos"]}