CVE-2026-67305

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{"bugzilla": {"description": "FreeRDP: FreeRDP Windows Client: Remote Code Execution via Heap Buffer Overflow in Clipboard Processing", "id": "2510027", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510027"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-122", "details": ["FreeRDP Windows client before 3.29.0 contains a heap buffer overflow vulnerability in the clipboard virtual channel when processing CLIPRDR_FILE_CONTENTS_RESPONSE PDUs without validating the server-provided size against the destination buffer. A malicious RDP server can send a response with a data payload significantly larger than requested, causing arbitrary heap memory corruption that may enable remote code execution when a user performs a paste operation.", "The FreeRDP Windows client contains a heap buffer overflow vulnerability. If a user pastes maliciously crafted, oversized clipboard data from an untrusted RDP server, it triggers memory corruption that may result in remote code execution."], "name": "CVE-2026-67305", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-01T12:22:16Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-67305\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-67305\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cj9v-h4hq-29jr\nhttps://www.vulncheck.com/advisories/freerdp-windows-client-before-heap-buffer-overflow-via-cliprdr"], "statement": "Red Hat products are not impacted by this vulnerability. The affected codebase (wfreerdp / wf_cliprdr.c) is exclusive to the Windows client, whereas Red Hat Enterprise Linux (RHEL) strictly utilizes and builds Linux clients for FreeRDP.", "threat_severity": "Important"}

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