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FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, freerdp_image_copy_from_icon_data in libfreerdp/codec/color.c calculates nWidth multiplied by nHeight multiplied by FreeRDPGetBytesPerPixel(format) in 32-bit arithmetic. A malicious RDP server can send a RAIL TS_ICON_INFO update with dimensions such as 32768 by 32768 and 32 bits per pixel so the required-size calculation wraps, bypassing the cbBitsColor source bounds check before freerdp_image_copy_no_overlap reads attacker-controlled icon data. This affects RemoteApp clients using the vulnerable library path, while xfreerdp has a caller-side mitigation. This issue is fixed in version 3.27.0.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade freerdp | Aug 20, 2026 | Aug 19, 2026 |
| Amazon Linux Ami 2 | — | Upgrade freerdp-debuginfoUpgrade libwinpr-develUpgrade freerdpUpgrade freerdp-develUpgrade libwinprUpgrade freerdp-libs | Aug 5, 2026 | Aug 5, 2026 |
| Redhat_linux | — | No solution exists | Aug 26, 2026 | Aug 19, 2026 |
| Ubuntu | — | Upgrade freerdp3-x11Upgrade freerdp-x11Upgrade libfreerdp3-3 | Jul 21, 2026 | Jul 20, 2026 |
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