CVE-2026-67298

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{"bugzilla": {"description": "FreeRDP: FreeRDP: Denial of Service via integer underflow in RAIL channel handling", "id": "2510041", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510041"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H", "status": "draft"}, "cwe": "CWE-191", "details": ["A flaw was found in FreeRDP. A remote attacker, by sending a specially crafted Remote Desktop Protocol (RDP) packet, could trigger a heap buffer overflow in the server-side RAIL channel handler. This vulnerability, caused by an integer underflow, allows the attacker to corrupt memory and crash the FreeRDP server, leading to a denial of service."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue do not expose FreeRDP server/proxy/shadow (freerdp-shadow-cli / freerdp-proxy) to untrusted networks\u2014allow only trusted clients via firewall, or disable those services if unused."}, "name": "CVE-2026-67298", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-01T12:22:18Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-67298\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-67298\nhttps://github.com/FreeRDP/FreeRDP/commit/46848765f2a1134f8652f8760eefb5e85d64a9b8\nhttps://github.com/FreeRDP/FreeRDP/commit/5370fb26fbf034ecd11d3026b6ad639b5fff493f\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qmvw-52ph-q5pv\nhttps://www.vulncheck.com/advisories/freerdp-heap-buffer-overflow-via-rail-orderlength-underflow"], "statement": "This is an Important flaw. A heap buffer overflow in the FreeRDP server-side RAIL channel handler can be exploited by a malicious or compromised RDP client, leading to a denial of service. This vulnerability impacts the availability of remote desktop services on Red Hat systems by causing the RDP server to crash. Exploitation requires the RDP server to be active and reachable by an attacker.", "threat_severity": "Important"}

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