CVE-2026-18358: Uncontrolled Resource Consumption in Red Hat Red Hat Enterprise Linux 10
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.
AI Analysis
Technical Summary
The vulnerability in gnome-remote-desktop on Red Hat Enterprise Linux 10 involves the RDP listener's incoming connection handler bypassing the connection throttler when the daemon runs in system mode with RDP enabled. This allows an unauthenticated remote attacker to open numerous parallel pre-authentication connections, accumulating accepted sockets and pending routing-token operations until timeout. The resulting uncontrolled resource consumption can exhaust system resources and block legitimate users from establishing RDP sessions. The upstream version of gnome-remote-desktop is not affected by this issue.
Potential Impact
An unauthenticated remote attacker can cause a denial of service by exhausting resources on the affected system, preventing legitimate users from establishing RDP sessions. There is no impact on confidentiality or integrity, but availability is severely affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-18358 for current remediation guidance. Until an official fix is available, consider disabling RDP in gnome-remote-desktop system mode or restricting network access to the RDP listener to trusted hosts to mitigate exploitation risk.
CVE-2026-18358: Uncontrolled Resource Consumption in Red Hat Red Hat Enterprise Linux 10
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.
CVSS v3.1
Score 7.5high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in gnome-remote-desktop on Red Hat Enterprise Linux 10 involves the RDP listener's incoming connection handler bypassing the connection throttler when the daemon runs in system mode with RDP enabled. This allows an unauthenticated remote attacker to open numerous parallel pre-authentication connections, accumulating accepted sockets and pending routing-token operations until timeout. The resulting uncontrolled resource consumption can exhaust system resources and block legitimate users from establishing RDP sessions. The upstream version of gnome-remote-desktop is not affected by this issue.
Potential Impact
An unauthenticated remote attacker can cause a denial of service by exhausting resources on the affected system, preventing legitimate users from establishing RDP sessions. There is no impact on confidentiality or integrity, but availability is severely affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-18358 for current remediation guidance. Until an official fix is available, consider disabling RDP in gnome-remote-desktop system mode or restricting network access to the RDP listener to trusted hosts to mitigate exploitation risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-07-30T08:33:03.012Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-18358","vendor":"Red Hat"}]
Threat ID: 6a6c96f7182cb5723b00aea0
Added to database: 07/31/2026, 12:37:11 UTC
Last enriched: 07/31/2026, 12:50:55 UTC
Last updated: 07/31/2026, 13:00:07 UTC
Views: 5
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