CVE-2026-91963
freerdp3: FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redire...
CVE-2026-91963 is fixed in 34 products on 1 platform, first by ALAS2023-2026-2142, released September 14, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.8
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0067
52nd percentile
FreeRDP versions before 3.31.0 contain an uninitialized heap memory disclosure vulnerability in the urbdrc USB redirection channel. A malicious RDP server can induce failing USB transfers to read uninitialized heap memory from the client, defeating ASLR and enabling remote code execution when chained with memory corruption vulnerabilities.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp · RHEL 10 | 3.10.3-12.el10_2.14 | RHSA-2026:75570 | Oct 5, 2026 |
| freerdp · RHEL 8 | 2:2.11.7-14.el8_10 | RHSA-2026:76747 | Oct 6, 2026 |
| freerdp · RHEL 9 | 2:2.11.7-7.el9_8.8 | RHSA-2026:76755 | Oct 9, 2026 |
| freerdp · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp · almalinux 8 | 2:2.11.7-14.el8_10 | ALSA-2026:76747 | Oct 6, 2026 |
| freerdp · almalinux 9 | 2:2.11.7-7.el9_8.8 | ALSA-2026:76755 | Oct 6, 2026 |
| freerdp · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp · ol 8 | 2:2.11.7-14.el8_10 | ELSA-2026-76747 | Oct 6, 2026 |
| freerdp · ol 9 | 2:2.11.7-7.el9_8.8 | ELSA-2026-76755 | Oct 7, 2026 |
| freerdp · rocky 10 | 2:3.10.3-12.el10_2.14 | RLSA-2026:75570 | Oct 6, 2026 |
| freerdp · rocky 8 | 2:2.11.7-14.el8_10 | RLSA-2026:76747 | Oct 7, 2026 |
| freerdp · rocky 9 | 2:2.11.7-7.el9_8.8 | RLSA-2026:76755 | Nov 7, 2026 |
| freerdp-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-debugsource · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-devel · RHEL 8 | 2:2.11.7-14.el8_10 | RHSA-2026:76747 | Oct 6, 2026 |
| freerdp-devel · RHEL 9 | 2:2.11.7-7.el9_8.8 | RHSA-2026:76755 | Oct 9, 2026 |
| freerdp-devel · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp-devel · almalinux 8 | 2:2.11.7-14.el8_10 | ALSA-2026:76747 | Oct 6, 2026 |
| freerdp-devel · almalinux 9 | 2:2.11.7-7.el9_8.8 | ALSA-2026:76755 | Oct 6, 2026 |
| freerdp-devel · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-devel · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp-devel · ol 8 | 2:2.11.7-14.el8_10 | ELSA-2026-76747 | Oct 6, 2026 |
| freerdp-devel · ol 9 | 2:2.11.7-7.el9_8.8 | ELSA-2026-76755 | Oct 7, 2026 |
| freerdp-libs · RHEL 8 | 2:2.11.7-14.el8_10 | RHSA-2026:76747 | Oct 6, 2026 |
| freerdp-libs · RHEL 9 | 2:2.11.7-7.el9_8.8 | RHSA-2026:76755 | Oct 9, 2026 |
| freerdp-libs · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp-libs · almalinux 8 | 2:2.11.7-14.el8_10 | ALSA-2026:76747 | Oct 6, 2026 |
| freerdp-libs · almalinux 9 | 2:2.11.7-7.el9_8.8 | ALSA-2026:76755 | Oct 6, 2026 |
| freerdp-libs · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-libs · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp-libs · ol 8 | 2:2.11.7-14.el8_10 | ELSA-2026-76747 | Oct 6, 2026 |
| freerdp-libs · ol 9 | 2:2.11.7-7.el9_8.8 | ELSA-2026-76755 | Oct 7, 2026 |
| freerdp-libs-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-proxy · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-proxy 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-proxy-modules · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-proxy-modules 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-sdl · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-sdl 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-server · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp-server · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-server · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp-server-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| freerdp-shadow-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-shadow-x11 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-wayland · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-wayland 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp-x11 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3 · Debian 14 | 3.31.0+dfsg-1 | DEBIAN-CVE-2026-91963 | Sep 17, 2026 |
| freerdp3-proxy · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-proxy 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-proxy-modules · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-proxy-modules 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-sdl · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-sdl 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-shadow-x11 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | freerdp3-shadow-x11 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| freerdp3-shadow-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-shadow-x11 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-wayland · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | freerdp3-wayland 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| freerdp3-wayland · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-wayland 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| freerdp3-x11 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | freerdp3-x11 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| freerdp3-x11 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | freerdp3-x11 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-client3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-client3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp-client3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-client3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-server-proxy3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-server-proxy3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-server3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-server3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp-server3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-server3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-shadow-subsystem3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-shadow-subsystem3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-shadow3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp-shadow3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libfreerdp3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libfreerdp3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libfreerdp3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libfreerdp3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libwinpr · RHEL 8 | 2:2.11.7-14.el8_10 | RHSA-2026:76747 | Oct 6, 2026 |
| libwinpr · RHEL 9 | 2:2.11.7-7.el9_8.8 | RHSA-2026:76755 | Oct 9, 2026 |
| libwinpr · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| libwinpr · almalinux 8 | 2:2.11.7-14.el8_10 | ALSA-2026:76747 | Oct 6, 2026 |
| libwinpr · almalinux 9 | 2:2.11.7-7.el9_8.8 | ALSA-2026:76755 | Oct 6, 2026 |
| libwinpr · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| libwinpr · ol 8 | 2:2.11.7-14.el8_10 | ELSA-2026-76747 | Oct 6, 2026 |
| libwinpr · ol 9 | 2:2.11.7-7.el9_8.8 | ELSA-2026-76755 | Oct 7, 2026 |
| libwinpr-debuginfo · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr-devel · RHEL 8 | 2:2.11.7-14.el8_10 | RHSA-2026:76747 | Oct 6, 2026 |
| libwinpr-devel · RHEL 9 | 2:2.11.7-7.el9_8.8 | RHSA-2026:76755 | Oct 9, 2026 |
| libwinpr-devel · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| libwinpr-devel · almalinux 8 | 2:2.11.7-14.el8_10 | ALSA-2026:76747 | Oct 6, 2026 |
| libwinpr-devel · almalinux 9 | 2:2.11.7-7.el9_8.8 | ALSA-2026:76755 | Oct 6, 2026 |
| libwinpr-devel · amzn 2023 | 2:3.31.0-1.amzn2023 | ALAS2023-2026-2142 | Sep 14, 2026 |
| libwinpr-devel · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| libwinpr-devel · ol 8 | 2:2.11.7-14.el8_10 | ELSA-2026-76747 | Oct 6, 2026 |
| libwinpr-devel · ol 9 | 2:2.11.7-7.el9_8.8 | ELSA-2026-76755 | Oct 7, 2026 |
| libwinpr-tools3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libwinpr-tools3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libwinpr-tools3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libwinpr-tools3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| libwinpr3-3 · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | libwinpr3-3 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| libwinpr3-3 · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | libwinpr3-3 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| winpr-utils · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | winpr-utils 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
| winpr3-utils · Ubuntu 24.04.5 LTS (noble) | 3.31.0+dfsg-0ubuntu0.24.04.1 | winpr3-utils 3.31.0+dfsg-0ubuntu0.24.04.1 | Sep 14, 2026 |
| winpr3-utils · Ubuntu 26.04.1 LTS (resolute) | 3.31.0+dfsg-0ubuntu0.26.04.1 | winpr3-utils 3.31.0+dfsg-0ubuntu0.26.04.1 | Sep 15, 2026 |
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