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CVE-2026-18358 is a denial-of-service vulnerability in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daemon is running in system mode with RDP enabled, the incoming RDP connection handler does not properly apply connection throttling to pre-authentication sessions. As a result, an unauthenticated remote attacker can establish large numbers of parallel connections to the RDP listener, causing accepted sockets and pending routing-token operations to accumulate until timeout. This resource exhaustion condition prevents legitimate users from successfully establishing RDP sessions. The issue is described as affecting the Red Hat Enterprise Linux shipped version and not the upstream version.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.