What is CVE-2026-109942?

CVE-2026-109942 is a medium-severity vulnerability in Freerdp, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-10-13.

How severe is CVE-2026-109942?

Medium severity. CVSS v3 base score is 6.5 out of 10.

NULL pointer dereference in Freerdp

CVE-2026-109942

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.

Published 2026-10-13.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Freerdp

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f46f-pxh9-w2rh (vendor-advisory)
www.vulncheck.com/advisories/freerdp-2.3.0-before-3.32.0-null-pointer-dereferen… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109942?: CVE-2026-109942 is a medium-severity vulnerability in Freerdp, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-10-13.
How severe is CVE-2026-109942?: Medium severity. CVSS v3 base score is 6.5 out of 10.