What is CVE-2026-67298?

CVE-2026-67298 is a high-severity vulnerability in Freerdp, classified under Integer Underflow. CVSS score: 7.5/10. Published 2026-08-01.

How severe is CVE-2026-67298?

High severity. CVSS v3 base score is 7.5 out of 10.

Integer overflow in Freerdp

CVE-2026-67298

FreeRDP versions 3.28.0 and earlier contain a heap buffer overflow in the server-side RAIL channel handler (rail_server_handle_messages() in channels/rail/server/rail_main.c). When processing a RAIL PDU header, the code subtracts RAIL_PDU_…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Freerdp — versions 0, 3.29.0

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-67298?: CVE-2026-67298 is a high-severity vulnerability in Freerdp, classified under Integer Underflow. CVSS score: 7.5/10. Published 2026-08-01.
How severe is CVE-2026-67298?: High severity. CVSS v3 base score is 7.5 out of 10.