CVE-2026-33983
freerdp3-shadow-x11: FreeRDP is a free implementation of the Remote Desktop Protocol
CVE-2026-33983 is fixed in 23 products on 1 platform, first by RHSA-2026:11333, released March 30, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0044
38th percentile
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, progressive_decompress_tile_upgrade() detects a mismatch via progressive_rfx_quant_cmp_equal() but only emits WLog_WARN, execution continues. The wrapped value (247) is used as a shift exponent, causing undefined behavior and an approximately 80 billion iteration loop (CPU DoS). This issue has been patched in version 3.24.2.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp · RHEL 10 | 3.10.3-3.el10_0.6 | RHSA-2026:11333 | Mar 30, 2026 |
| freerdp · RHEL 8 | 2:2.11.7-7.el8_10 | RHSA-2026:8945 | Apr 30, 2026 |
| freerdp · RHEL 9 | 2:2.11.7-1.el9_7.6 | RHSA-2026:8457 | Apr 30, 2026 |
| freerdp · almalinux 10 | 2:3.10.3-5.el10_1.6 | ALSA-2026:8458 | Apr 16, 2026 |
| freerdp · almalinux 8 | 2:2.11.7-7.el8_10 | ALSA-2026:8945 | Apr 20, 2026 |
| freerdp · almalinux 9 | 2:2.11.7-1.el9_7.6 | ALSA-2026:8457 | Apr 16, 2026 |
| freerdp · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| freerdp · ol 10 | 2:3.10.3-5.el10_1.6 | ELSA-2026-8458 | Apr 16, 2026 |
| freerdp · ol 8 | 2:2.11.7-7.el8_10 | ELSA-2026-8945 | Apr 20, 2026 |
| freerdp · ol 9 | 2:2.11.7-1.el9_7.6 | ELSA-2026-8457 | Apr 16, 2026 |
| freerdp · rocky 10 | 2:3.10.3-5.el10_1.6 | RLSA-2026:8458 | Apr 18, 2026 |
| freerdp · rocky 8 | 2:2.11.7-7.el8_10 | RLSA-2026:8945 | Apr 23, 2026 |
| freerdp · rocky 9 | 2:2.11.7-1.el9_7.6 | RLSA-2026:8457 | Apr 19, 2026 |
| freerdp · sles 15.7 | 3.10.3-150700.3.17.1 | SUSE-SU-2026:3562-1 | Aug 10, 2026 |
| freerdp-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| freerdp-debugsource · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| freerdp-devel · RHEL 8 | 2:2.11.7-7.el8_10 | RHSA-2026:8945 | Apr 30, 2026 |
| freerdp-devel · RHEL 9 | 2:2.11.7-1.el9_7.6 | RHSA-2026:8457 | Apr 30, 2026 |
| freerdp-devel · almalinux 10 | 2:3.10.3-5.el10_1.6 | ALSA-2026:8458 | Apr 16, 2026 |
| freerdp-devel · almalinux 8 | 2:2.11.7-7.el8_10 | ALSA-2026:8945 | Apr 20, 2026 |
| freerdp-devel · almalinux 9 | 2:2.11.7-1.el9_7.6 | ALSA-2026:8457 | Apr 16, 2026 |
| freerdp-devel · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| freerdp-devel · ol 10 | 2:3.10.3-5.el10_1.6 | ELSA-2026-8458 | Apr 16, 2026 |
| freerdp-devel · ol 8 | 2:2.11.7-7.el8_10 | ELSA-2026-8945 | Apr 20, 2026 |
| freerdp-devel · ol 9 | 2:2.11.7-1.el9_7.6 | ELSA-2026-8457 | Apr 16, 2026 |
| freerdp-libs · RHEL 8 | 2:2.11.7-7.el8_10 | RHSA-2026:8945 | Apr 30, 2026 |
| freerdp-libs · RHEL 9 | 2:2.11.7-1.el9_7.6 | RHSA-2026:8457 | Apr 30, 2026 |
| freerdp-libs · almalinux 10 | 2:3.10.3-5.el10_1.6 | ALSA-2026:8458 | Apr 16, 2026 |
| freerdp-libs · almalinux 8 | 2:2.11.7-7.el8_10 | ALSA-2026:8945 | Apr 20, 2026 |
| freerdp-libs · almalinux 9 | 2:2.11.7-1.el9_7.6 | ALSA-2026:8457 | Apr 16, 2026 |
| freerdp-libs · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| freerdp-libs · ol 10 | 2:3.10.3-5.el10_1.6 | ELSA-2026-8458 | Apr 16, 2026 |
| freerdp-libs · ol 8 | 2:2.11.7-7.el8_10 | ELSA-2026-8945 | Apr 20, 2026 |
| freerdp-libs · ol 9 | 2:2.11.7-1.el9_7.6 | ELSA-2026-8457 | Apr 16, 2026 |
| freerdp-libs-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| freerdp-server · almalinux 10 | 2:3.10.3-5.el10_1.6 | ALSA-2026:8458 | Apr 16, 2026 |
| freerdp-server · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| freerdp-server · ol 10 | 2:3.10.3-5.el10_1.6 | ELSA-2026-8458 | Apr 16, 2026 |
| freerdp-server-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| freerdp3 · Debian 13.5 (trixie) | 3.15.0+dfsg-2.1+deb13u2 | DEBIAN-CVE-2026-33983 | Mar 30, 2026 |
| freerdp3 · Debian 14 | 3.24.2+dfsg-1 | DEBIAN-CVE-2026-33983 | Mar 30, 2026 |
| freerdp3-shadow-x11 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | freerdp3-shadow-x11 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| freerdp3-wayland · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | freerdp3-wayland 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| freerdp3-x11 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | freerdp3-x11 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp-client3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-client3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp-server3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-server3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp-shadow-subsystem3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-shadow-subsystem3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp-shadow3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp-shadow3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libfreerdp3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libfreerdp3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libwinpr · RHEL 8 | 2:2.11.7-7.el8_10 | RHSA-2026:8945 | Apr 30, 2026 |
| libwinpr · RHEL 9 | 2:2.11.7-1.el9_7.6 | RHSA-2026:8457 | Apr 30, 2026 |
| libwinpr · almalinux 10 | 2:3.10.3-5.el10_1.6 | ALSA-2026:8458 | Apr 16, 2026 |
| libwinpr · almalinux 8 | 2:2.11.7-7.el8_10 | ALSA-2026:8945 | Apr 20, 2026 |
| libwinpr · almalinux 9 | 2:2.11.7-1.el9_7.6 | ALSA-2026:8457 | Apr 16, 2026 |
| libwinpr · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| libwinpr · ol 10 | 2:3.10.3-5.el10_1.6 | ELSA-2026-8458 | Apr 16, 2026 |
| libwinpr · ol 8 | 2:2.11.7-7.el8_10 | ELSA-2026-8945 | Apr 20, 2026 |
| libwinpr · ol 9 | 2:2.11.7-1.el9_7.6 | ELSA-2026-8457 | Apr 16, 2026 |
| libwinpr-debuginfo · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| libwinpr-devel · RHEL 8 | 2:2.11.7-7.el8_10 | RHSA-2026:8945 | Apr 30, 2026 |
| libwinpr-devel · RHEL 9 | 2:2.11.7-1.el9_7.6 | RHSA-2026:8457 | Apr 30, 2026 |
| libwinpr-devel · almalinux 10 | 2:3.10.3-5.el10_1.6 | ALSA-2026:8458 | Apr 16, 2026 |
| libwinpr-devel · almalinux 8 | 2:2.11.7-7.el8_10 | ALSA-2026:8945 | Apr 20, 2026 |
| libwinpr-devel · almalinux 9 | 2:2.11.7-1.el9_7.6 | ALSA-2026:8457 | Apr 16, 2026 |
| libwinpr-devel · amzn 2023 | 2:3.6.3-1.amzn2023.0.10 | ALAS2023-2026-1549 | Apr 13, 2026 |
| libwinpr-devel · ol 10 | 2:3.10.3-5.el10_1.6 | ELSA-2026-8458 | Apr 16, 2026 |
| libwinpr-devel · ol 8 | 2:2.11.7-7.el8_10 | ELSA-2026-8945 | Apr 20, 2026 |
| libwinpr-devel · ol 9 | 2:2.11.7-1.el9_7.6 | ELSA-2026-8457 | Apr 16, 2026 |
| libwinpr-tools3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libwinpr-tools3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| libwinpr3-3 · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | libwinpr3-3 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
| winpr3-utils · Ubuntu 24.04.5 LTS (noble) | 3.30.0+dfsg-0ubuntu0.24.04.1 | winpr3-utils 3.30.0+dfsg-0ubuntu0.24.04.1 | Jul 23, 2026 |
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