CVE-2026-109256

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{"bugzilla": {"description": "freerdp: FreeRDP: Denial of Service via heap buffer overflow during clipboard image conversion", "id": "2549835", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2549835"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["FreeRDP 3.10.0 through 3.32.2 contains a heap buffer overflow in the WinPR png_write_data callback that writes past the buffer after a realloc failure. A malicious RDP clipboard peer can supply a large CF_DIB image that triggers out-of-bounds memcpy during PNG conversion, causing a client crash.", "A flaw was found in FreeRDP. A remote attacker acting as a malicious Remote Desktop Protocol (RDP) clipboard peer can cause a Denial of Service (DoS) by sending a specially crafted image over the clipboard channel. When the client converts the image to the PNG format, a memory reallocation failure triggers a heap-based buffer overflow, causing an application crash."], "name": "CVE-2026-109256", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "2026-10-12T16:04:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-109256\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-109256\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wf3x-658c-52m5\nhttps://www.vulncheck.com/advisories/freerdp-3.10.0-through-3.32.2-heap-buffer-overflow-in-winpr-png-conversion"], "threat_severity": "Moderate"}

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