CVE-2026-110839GHSA-99p4-8j24-wvj4
FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Grayscale JPEG Clipboard Data
FreeRDP FreeRDP
CVSS
7.1HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 15 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.22%Chance of exploitation activity in the next 30 days, higher than 12% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 3.32.0FreeRDPCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
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 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.
Text from CVE List
Affected versions 2
- FreeRDPaffected: 3.3.0 before 3.32.0CVE List
- FreeRDPunaffected: 3.32.0CVE List