CVE-2026-109251

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{"bugzilla": {"description": "freerdp: FreeRDP: Denial of Service via invalid video geometry coordinates", "id": "2549777", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2549777"}, "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 before 3.32.0 stores the server-supplied signed MS-RDPEGT geometry origin unchecked in an unsigned video surface coordinate, so the blit clamp in gdiVideoShowSurface() wraps in 32-bit arithmetic and is skipped. A malicious RDP server can send a negative topLevelLeft to clients connecting with /video, causing an out-of-bounds write of decoded H.264 picture data or a client abort.", "A flaw was found in FreeRDP. A malicious Remote Desktop Protocol (RDP) server can cause a Denial of Service (DoS) on a connecting client by supplying invalid geometry coordinates when video redirection is enabled. Because FreeRDP does not properly validate server-provided video coordinates, an integer calculation wraparound bypasses boundary checks, resulting in an out-of-bounds memory write and causing the client application to crash."], "name": "CVE-2026-109251", "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": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-12T16:04:24Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-109251\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-109251\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-grvc-qhhp-7h6m\nhttps://www.vulncheck.com/advisories/freerdp-before-3.32.0-out-of-bounds-write-via-ms-rdpegt-video-geometry"], "threat_severity": "Moderate"}

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