{"id":"CVE-2026-110839","title":"FreeRDP 3.3.0 before 3.32.0, when built with WINPR_UTILS_IMAGE_JPEG=ON, has a heap-based out-of-bounds write in winpr_convert_from_jpeg because grayscale JPEG buffers are sized from one input component rather than three BGR output compon…","summary":"FreeRDP 3.3.0 before 3.32.0, when built with WINPR_UTILS_IMAGE_JPEG=ON, has a heap-based out-of-bounds write in winpr_convert_from_jpeg because grayscale JPEG buffers are sized from one input component rather than three BGR output compon…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","cwe":["CWE-787"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T23:17:24.173","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110839","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-99p4-8j24-wvj4","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/freerdp-3.3.0-before-3.32.0-heap-out-of-bounds-write-via-grayscale-jpeg-clipboard-data","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-15T00:02:07.174Z","slug":"CVE-2026-110839","body":"## Overview\n\nFreeRDP 3.3.0 before 3.32.0, when built with WINPR_UTILS_IMAGE_JPEG=ON, has a heap-based out-of-bounds write in winpr_convert_from_jpeg because grayscale JPEG buffers are sized from one input component rather than three BGR output components. A malicious RDP server can offer a grayscale JPEG via clipboard redirection, corrupting client memory and crashing it when the item is pasted as CF_DIB bitmap data.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}