What is CVE-2026-67289?

CVE-2026-67289 is a critical-severity vulnerability in Freerdp, classified under HTTP Response Splitting. CVSS score: 9.8/10. Published 2026-08-01.

How severe is CVE-2026-67289?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Freerdp

CVE-2026-67289

FreeRDP before 3.29.0 (affected versions <= 3.28.0) does not validate CRLF and control characters in the server-controlled RDP redirection TargetNetAddress field. This value is copied into the client's ServerHostname and, when the client c…

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Freerdp — versions 0, 3.29.0

Weakness classification (CWE)

CWE-113 — HTTP Response Splitting

References

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

Frequently asked questions

What is CVE-2026-67289?: CVE-2026-67289 is a critical-severity vulnerability in Freerdp, classified under HTTP Response Splitting. CVSS score: 9.8/10. Published 2026-08-01.
How severe is CVE-2026-67289?: Critical severity. CVSS v3 base score is 9.8 out of 10.