# CVE-2026-18358: gnome-remote-desktop: A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux

CVE-2026-18358 is fixed in 3 products on 1 platform, first by ALSA-2026:54512, released August 13, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-18358
- Priority: High
- CVSS: 7.5 (moderate)
- EPSS: 0.0066
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 31, 2026

## Description

A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming connection handler bypasses the connection throttler, allowing an unauthenticated remote attacker to open many parallel pre-authentication connections to the RDP listener. This can accumulate accepted sockets and pending routing-token operations until timeout, exhausting resources and preventing legitimate users from establishing RDP sessions. This issue does not affect the upstream version.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gnome-remote-desktop RHEL 10 | 47.3-3.el10_0.1 | [RHSA-2026:86194](https://patchblox.com/security/data/fix/linux/rhsa-2026-86194.md) | Aug 13, 2026 |
| Linux | gnome-remote-desktop almalinux 10 | 49.3-4.el10_2 | [ALSA-2026:54512](https://patchblox.com/security/data/fix/linux/alsa-2026-54512.md) | Aug 13, 2026 |
| Linux | gnome-remote-desktop amzn 2023 | 47.3-1.amzn2023.0.3 | [ALAS2023-2026-2068](https://patchblox.com/security/data/fix/linux/alas2023-2026-2068.md) | Aug 17, 2026 |
| Linux | gnome-remote-desktop ol 10 | 0:49.3-4.el10_2 | [ELSA-2026-54512](https://patchblox.com/security/data/fix/linux/elsa-2026-54512.md) | Aug 13, 2026 |
| Linux | gnome-remote-desktop opensuse-leap 16.0 | 48.3-160000.3.1 | [OPENSUSE-SU-2026:21888-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21888-1.md) | Sep 20, 2026 |
| Linux | gnome-remote-desktop rocky 10 | 0:49.3-4.el10_2 | [RLSA-2026:54512](https://patchblox.com/security/data/fix/linux/rlsa-2026-54512.md) | Aug 14, 2026 |
| Linux | gnome-remote-desktop-debuginfo amzn 2023 | 47.3-1.amzn2023.0.3 | [ALAS2023-2026-2068](https://patchblox.com/security/data/fix/linux/alas2023-2026-2068.md) | Aug 17, 2026 |
| Linux | gnome-remote-desktop-debugsource amzn 2023 | 47.3-1.amzn2023.0.3 | [ALAS2023-2026-2068](https://patchblox.com/security/data/fix/linux/alas2023-2026-2068.md) | Aug 17, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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