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 connects through an HTTP proxy, is written directly into the proxy CONNECT request line and Host header by http_proxy_connect() without filtering. A malicious or compromised RDP server can send a crafted redirection PDU containing embedded control characters to inject arbitrary headers/requests into the HTTP proxy CONNECT request.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.8
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- EPSS probability
- 0.40%
- CWE
- CWE-113
- Published
- 2026-08-01
- Last modified
- 2026-08-05
Affected products
- FreeRDP FreeRDP
- FreeRDP FreeRDP
Weakness type
Related vulnerabilities
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- CVE-2026-39915 — TIM Flow < 26.0.6 CRLF Injection via rt Parameter
- CVE-2026-50576 — ePA 3.x Integration: HTTP Header Injection in VAU Inner Requests
- CVE-2026-66746 — Rouille 0.4.0 - 3.6.2 HTTP Response Splitting via Header Injection
- CVE-2026-66753 — tiny-http 0.12.0 HTTP Response Splitting via Header Injection
- CVE-2026-63771 — Adminer < 5.4.3 Cookie Injection via X-Forwarded-Prefix Header
- CVE-2026-54163 — secure_headers: CSP directive injection via sandbox, plugin_types, and report_to when given untrusted input
- CVE-2025-62826 — An Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')...