{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3006", "assignerOrgId": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4", "state": "PUBLISHED", "assignerShortName": "CSA", "dateReserved": "2026-02-23T05:15:38.972Z", "datePublished": "2026-04-27T02:35:17.773Z", "dateUpdated": "2026-04-27T02:35:17.773Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4", "shortName": "CSA", "dateUpdated": "2026-04-27T02:35:17.773Z"}, "title": "Race Condition Vulnerability", "datePublic": "2026-04-27T02:31:00.000Z", "affected": [{"vendor": "WinFSP", "product": "WinFSP", "versions": [{"status": "affected", "version": "2.1.25156 and lower"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Successful exploitation of the race condition vulnerability could allow\nan attacker to trigger a kernel heap overflow, potentially leading to local privilege\nescalation and granting system-level access to the affected software.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Successful exploitation of the race condition vulnerability could allow\nan attacker to trigger a kernel heap overflow, potentially leading to local privilege\nescalation and granting system-level access to the affected software.</p>"}]}], "references": [{"url": "https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-043"}, {"url": "https://github.com/winfsp/winfsp/releases/tag/v2.2B1"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}}], "solutions": [{"lang": "en", "value": "Users and administrators of affected product versions are\nadvised to update to the latest version immediately.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Users and administrators of affected product versions are\nadvised to update to the latest version immediately.</p>"}]}], "credits": [{"lang": "en", "value": "Tay Kiat Loong", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Successful exploitation of the race condition vulnerability could allow\nan attacker to trigger a kernel heap overflow, potentially leading to local privilege\nescalation and granting system-level access to the affected software."}], "id": "CVE-2026-3006", "lastModified": "2026-04-27T03:15:59.277", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4", "type": "Secondary"}]}, "published": "2026-04-27T03:15:59.277", "references": [{"source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4", "url": "https://github.com/winfsp/winfsp/releases/tag/v2.2B1"}, {"source": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4", "url": "https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-043"}], "sourceIdentifier": "5f57b9bf-260d-4433-bf07-b6a79e9bb7d4", "vulnStatus": "Received"}

{"bugzilla": {"description": "winfsp: winfsp: Local privilege escalation via race condition and kernel heap overflow", "id": "2463150", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2463150"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-368", "details": ["A flaw was found in winfsp. A local attacker could exploit a race condition vulnerability, which may lead to a kernel heap overflow. This could potentially result in local privilege escalation, granting the attacker system-level access to the affected software."], "name": "CVE-2026-3006", "package_state": [{"cpe": "cpe:/a:redhat:acm:2", "fix_state": "Affected", "package_name": "rhacm2/volsync-rhel9", "product_name": "Red Hat Advanced Cluster Management for Kubernetes 2"}], "public_date": "2026-04-27T02:35:17Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-3006\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-3006\nhttps://github.com/winfsp/winfsp/releases/tag/v2.2B1\nhttps://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-043"], "statement": "Important: This flaw in winfsp allows a local attacker to achieve privilege escalation through a race condition and kernel heap overflow. This could grant system-level access to the affected software. Red Hat products such as rclone in Fedora and EPEL, and rhacm2/volsync-rhel9 in Red Hat Advanced Cluster Management for Kubernetes are potentially affected through transitive dependencies.", "threat_severity": "Important"}

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