What’s Vulnerable › Vulnerabilities

CVE-2026-109942: FreeRDP 2.3.0 before 3.32.0 NULL Pointer Dereference via RD Gateway Close Channel Packet

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-10-13 · updated 2026-10-26
• Weakness: CWE-476

Description

FreeRDP 2.3.0 before 3.32.0 dereferences a NULL stream in rdg_process_close_packet in libfreerdp/core/gateway/rdg.c because rdg_process_control_packet accepts a header-only PKT_TYPE_CLOSE_CHANNEL packet and passes the null payload without a check. A malicious or compromised RD Gateway can send an eight-byte CLOSE_CHANNEL header to crash a connecting FreeRDP client.

Affected products

• FreeRDP: from 2.3.0 before 3.32.0 — fixed in 3.32.0
• FreeRDP: from 2.3.0 before 3.32.0 — fixed in 3.32.0

How to fix

Upgrade to a fixed version: FreeRDP 3.32.0; FreeRDP 3.32.0. Check the vendor advisory for mitigations.

References

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f46f-pxh9-w2rh
• https://www.vulncheck.com/advisories/freerdp-2.3.0-before-3.32.0-null-pointer-dereference-via-rd-gateway-close-channel-packet
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f46f-pxh9-w2rh

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