Name: CVE-2026-67296: Improper Input Validation
Creator: Rapid7
Published: 2026-08-01T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-67296, CWE-20, CVSS 7.5, EPSS 0.00521

FreeRDP before 3.29.0 contains a denial of service vulnerability in the RDPEI server channel handler that fails to validate maximum PDU body length before stream allocation. A malicious RDP client can send a header-only RDPEI message with a large declared body length to force excessive memory allocation on the server.

CVSS Details

CVSS 4.0 Base Score: 8.7 (HIGH)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade freerdp-develUpgrade freerdp-libsUpgrade freerdp-serverUpgrade freerdpUpgrade libwinpr-develUpgrade libwinpr	Oct 27, 2026	Aug 31, 2026
Oracle_linux	—	Upgrade freerdp-libsUpgrade freerdp-serverUpgrade freerdp-develUpgrade libwinpr-develUpgrade freerdpUpgrade libwinpr	Oct 22, 2026	Aug 1, 2026
Redhat_linux	—	Upgrade libwinpr-debuginfoUpgrade freerdp-server-debuginfoUpgrade libwinprUpgrade freerdp-serverUpgrade freerdp-libsUpgrade freerdp-debuginfoUpgrade freerdp-libs-debuginfoUpgrade libwinpr-develUpgrade freerdpUpgrade freerdp-develUpgrade freerdp-debugsource	Aug 10, 2026	Aug 1, 2026
Rocky_linux	—	Upgrade freerdp-develUpgrade freerdp-debugsourceUpgrade freerdp-serverUpgrade freerdp-libsUpgrade libwinpr-debuginfoUpgrade freerdp-libs-debuginfoUpgrade libwinprUpgrade libwinpr-develUpgrade freerdpUpgrade freerdp-server-debuginfoUpgrade freerdp-debuginfo	Sep 3, 2026	Sep 1, 2026
Ubuntu	—	Upgrade freerdp3	Aug 17, 2026	Aug 1, 2026

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CVSS Details

Covered by Rapid7

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