CVE-2026-91960
freerdp3: FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's Stream_EnsureRemainingCapacity function that al...
CVE-2026-91960 is fixed in 29 products on 1 platform, first by freerdp3-shadow-x11 3.31.0+dfsg-0ubuntu0.24.04.1, 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
0.0046
40th percentile
FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's Stream_EnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame with a crafted 64-bit extended payload length to trigger integer wraparound, resulting in a double free that crashes the FreeRDP client during connection.
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 · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp · rocky 10 | 2:3.10.3-12.el10_2.14 | RLSA-2026:75570 | Oct 6, 2026 |
| freerdp-devel · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp-devel · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| freerdp-libs · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| freerdp-libs · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 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 · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 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-2026-91960 | 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 · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| libwinpr · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 2026 |
| libwinpr-devel · almalinux 10 | 2:3.10.3-12.el10_2.14 | ALSA-2026:75570 | Oct 5, 2026 |
| libwinpr-devel · ol 10 | 2:3.10.3-12.el10_2.14 | ELSA-2026-75570 | Oct 6, 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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