CVE-2026-55648
Fixed in a distro release EPSS <1%CVSS 6.1
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.
Products: FreeRDP
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | freerdp | 2:2.11.7-1.amzn2.0.13 |
| Amazon Linux 2 | freerdp-devel | 2:2.11.7-1.amzn2.0.13 |
| Amazon Linux 2 | freerdp-libs | 2:2.11.7-1.amzn2.0.13 |
| Amazon Linux 2 | libwinpr | 2:2.11.7-1.amzn2.0.13 |
| Amazon Linux 2 | libwinpr-devel | 2:2.11.7-1.amzn2.0.13 |
| Amazon Linux 2023 | freerdp | 2:3.6.3-1.amzn2023.0.13 |
| Amazon Linux 2023 | freerdp-devel | 2:3.6.3-1.amzn2023.0.13 |
| Amazon Linux 2023 | freerdp-libs | 2:3.6.3-1.amzn2023.0.13 |
| Amazon Linux 2023 | freerdp-server | 2:3.6.3-1.amzn2023.0.13 |
| Amazon Linux 2023 | libwinpr | 2:3.6.3-1.amzn2023.0.13 |
| Amazon Linux 2023 | libwinpr-devel | 2:3.6.3-1.amzn2023.0.13 |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | no fix |
| Debian 14 | freerdp3 | 3.27.0+dfsg-1 |
| Ubuntu 16.04 LTS | freerdp | no fix |
| Ubuntu 18.04 LTS | freerdp | no fix |
| Ubuntu 22.04 LTS | freerdp2 | no fix |
| Ubuntu 24.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.24.04.1 |
| Ubuntu 25.10 | freerdp3 | no fix |
| Ubuntu 26.04 LTS | freerdp3 | 3.30.0+dfsg-0ubuntu0.26.04.1 |
| Ubuntu Pro 18.04 LTS | freerdp2 | no fix |
| Ubuntu Pro 20.04 LTS | freerdp2 | no fix |
| Ubuntu Pro 24.04 LTS | freerdp2 | no fix |
| openSUSE Tumbleweed | freerdp | 3.27.1-1.1 |