CVE-2026-68579

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{"bugzilla": {"description": "FreeRDP: FreeRDP: Arbitrary Code Execution via Heap Overflow in Clipboard Processing", "id": "2510124", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510124"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["FreeRDP before 3.30.0 (<= 3.29.0) contains a heap-based buffer overflow in the Windows clipboard client's CliprdrStream_Read function (client/Windows/wf_cliprdr.c). When an OLE paste consumer (e.g. explorer.exe) calls IStream::Read with a fixed-size buffer of cb bytes, CliprdrStream_Read requests file contents from the RDP server and then copies the response into the caller's buffer using the server-supplied length (req_fsize) instead of cb. A malicious or compromised RDP server can return an oversized CB_FILECONTENTS_RESPONSE, causing an out-of-bounds write of attacker-controlled data into the paste consumer's heap buffer when a user pastes server-offered clipboard file contents.", "A flaw was found in FreeRDP. A heap-based buffer overflow exists in the Windows clipboard client's `CliprdrStream_Read` function. A malicious or compromised Remote Desktop Protocol (RDP) server can send an oversized clipboard file contents response. When a user pastes this content, it causes an out-of-bounds write into the paste consumer's memory, potentially leading to arbitrary code execution or a denial of service."], "name": "CVE-2026-68579", "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": "2026-08-02T12:15:26Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68579\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68579\nhttps://github.com/FreeRDP/FreeRDP/commit/5e8e987b469b60a3bafadf8f5afc40f91c09f458\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m37j-jcr2-8gcc\nhttps://www.vulncheck.com/advisories/freerdp-before-heap-overflow-via-cliprdrstream-read"], "statement": "This is a Windows specific vulnerability and does not affect Red Hat products.", "threat_severity": "Critical"}

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