CVE-2026-121399

MediumCVSS 4.3/10Last modified Nov 9, 2026

Description

FreeRDP before 3.32.2 contains a memory allocation vulnerability in rdg_receive_packet that allows a malicious RD Gateway to force a 2 GiB client allocation before tunnel authentication. Attackers can send an eight-byte RDG header declaring packet length 0x7FFFFFFF to trigger pre-authentication memory exhaustion and denial of service.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-770

Affected software

No affected versions have been published.

Timeline

Published
Nov 3, 2026
Last modified
Nov 9, 2026
NVD status
Modified

Related CVEs from 2026

CVE-2026-1214006.5FreeRDP before 3.32.2 contains a denial-of-service vulnerability in rdg_process_control_packet that allows a malicious RD Gateway to exhaustCVE-2026-1214014.3FreeRDP before 3.32.2 contains a denial of service vulnerability where rdg_process_packet dispatches a PKT_TYPE_EXTENDED_AUTH_MSG without veCVE-2026-1214026.5FreeRDP before 3.32.2 contains a NULL pointer dereference vulnerability that allows malicious RDP servers to crash xfreerdp clients by sendiCVE-2026-1214034.3FreeRDP before 3.32.2 contains a denial of service vulnerability where a malformed drive DEVICE_IOREQUEST with a truncated IRP_MJ_CREATE bodCVE-2026-1214046.5FreeRDP before 3.32.2 contains a denial of service vulnerability in the shadow server that allows authenticated RDP clients to spin server tCVE-2026-1214054.3FreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious servers to trigger excesCVE-2026-1214064.3FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects only negative zgfx_decompress status and passeCVE-2026-1214076.5FreeRDP before 3.32.2 contains a denial of service vulnerability in the shadow server's remdesk_server_thread that allows authenticated clieCVE-2026-1214085.3FreeRDP before 3.32.2 contains a use-after-free in the urbdrc USB redirection channel because FindChannelById returns a channel pointer withCVE-2026-1214095.9FreeRDP before 3.32.2 contains a denial of service vulnerability that allows malicious servers or unauthenticated peers to abort clients or CVE-2026-121414.9The Premium Addons for Elementor – Powerful Elementor Templates & Widgets plugin for WordPress is vulnerable to Stored Cross-Site Scripting CVE-2026-1214104.3FreeRDP before 3.32.2 contains a denial of service vulnerability in the RDPGFX ALPHA WIRETOSURFACE_2 handler that fails to validate zero sur
CVE-2026-121399: Medium severity, CVSS 4.3 | Vulnix