CVE-2026-91956
Fixed in a distro release EPSS <1%CVSS 6.5
FreeRDP before 3.31.0 contains an out-of-bounds read vulnerability in the URBDRC channel's func_get_ep_desc function that indexes interface arrays by position instead of protocol field InterfaceNumber. A malicious RDP server can send a crafted SELECT_CONFIGURATION message with permuted InterfaceNumber values to read past allocated heap memory and crash the client.
Products: FreeRDP
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | freerdp | 2:3.10.3-12.el10_2.14 |
| AlmaLinux 10 | freerdp-devel | 2:3.10.3-12.el10_2.14 |
| AlmaLinux 10 | freerdp-libs | 2:3.10.3-12.el10_2.14 |
| AlmaLinux 10 | freerdp-server | 2:3.10.3-12.el10_2.14 |
| AlmaLinux 10 | libwinpr | 2:3.10.3-12.el10_2.14 |
| AlmaLinux 10 | libwinpr-devel | 2:3.10.3-12.el10_2.14 |
| AlmaLinux 8 | freerdp | 2:2.11.7-14.el8_10 |
| AlmaLinux 8 | freerdp-devel | 2:2.11.7-14.el8_10 |
| AlmaLinux 8 | freerdp-libs | 2:2.11.7-14.el8_10 |
| AlmaLinux 8 | libwinpr | 2:2.11.7-14.el8_10 |
| AlmaLinux 8 | libwinpr-devel | 2:2.11.7-14.el8_10 |
| AlmaLinux 9 | freerdp | 2:2.11.7-7.el9_8.8 |
| AlmaLinux 9 | freerdp-devel | 2:2.11.7-7.el9_8.8 |
| AlmaLinux 9 | freerdp-libs | 2:2.11.7-7.el9_8.8 |
| AlmaLinux 9 | libwinpr | 2:2.11.7-7.el9_8.8 |
| AlmaLinux 9 | libwinpr-devel | 2:2.11.7-7.el9_8.8 |
| Amazon Linux 2 | freerdp | 2:2.11.7-1.amzn2.0.16 |
| Amazon Linux 2 | freerdp-devel | 2:2.11.7-1.amzn2.0.16 |
| Amazon Linux 2 | freerdp-libs | 2:2.11.7-1.amzn2.0.16 |
| Amazon Linux 2 | libwinpr | 2:2.11.7-1.amzn2.0.16 |
| Amazon Linux 2 | libwinpr-devel | 2:2.11.7-1.amzn2.0.16 |
| Amazon Linux 2023 | freerdp | 2:3.31.0-1.amzn2023 |
| Amazon Linux 2023 | freerdp-devel | 2:3.31.0-1.amzn2023 |
| Amazon Linux 2023 | freerdp-libs | 2:3.31.0-1.amzn2023 |
| Amazon Linux 2023 | freerdp-server | 2:3.31.0-1.amzn2023 |
| Amazon Linux 2023 | libwinpr | 2:3.31.0-1.amzn2023 |
| Amazon Linux 2023 | libwinpr-devel | 2:3.31.0-1.amzn2023 |
| Debian 12 | freerdp2 | no fix |
| Debian 13 | freerdp3 | no fix |
| Debian 14 | freerdp3 | 3.31.0+dfsg-1 |
| Red Hat Enterprise Linux 10.2 | freerdp | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | freerdp-debuginfo | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | freerdp-debugsource | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | freerdp-devel | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | freerdp-libs | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | freerdp-libs-debuginfo | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | freerdp-server | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | freerdp-server-debuginfo | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | libwinpr | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | libwinpr-debuginfo | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 10.2 | libwinpr-devel | 2:3.10.3-12.el10_2.14 |
| Red Hat Enterprise Linux 8 | freerdp | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 8 | freerdp-debuginfo | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 8 | freerdp-debugsource | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 8 | freerdp-devel | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 8 | freerdp-libs | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 8 | freerdp-libs-debuginfo | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 8 | libwinpr | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 8 | libwinpr-debuginfo | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 8 | libwinpr-devel | 2:2.11.7-14.el8_10 |
| Red Hat Enterprise Linux 9 | freerdp | 2:2.11.7-7.el9_8.8 |
| Red Hat Enterprise Linux 9 | freerdp-debuginfo | 2:2.11.7-7.el9_8.8 |
| Red Hat Enterprise Linux 9 | freerdp-debugsource | 2:2.11.7-7.el9_8.8 |
| Red Hat Enterprise Linux 9 | freerdp-devel | 2:2.11.7-7.el9_8.8 |
| Red Hat Enterprise Linux 9 | freerdp-libs | 2:2.11.7-7.el9_8.8 |
| Red Hat Enterprise Linux 9 | freerdp-libs-debuginfo | 2:2.11.7-7.el9_8.8 |
| Red Hat Enterprise Linux 9 | libwinpr | 2:2.11.7-7.el9_8.8 |
| Red Hat Enterprise Linux 9 | libwinpr-debuginfo | 2:2.11.7-7.el9_8.8 |
| Red Hat Enterprise Linux 9 | libwinpr-devel | 2:2.11.7-7.el9_8.8 |
| Rocky Linux 10 | freerdp | 2:3.10.3-12.el10_2.14 |
| Rocky Linux 8 | freerdp | 2:2.11.7-14.el8_10 |
| Rocky Linux 9 | freerdp | 2:2.11.7-7.el9_8.8 |
| 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 | 3.31.0+dfsg-0ubuntu0.24.04.1 |
| Ubuntu 26.04 LTS | freerdp3 | 3.31.0+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 |