CVE-2026-121409

MEDIUM 5.9

FreeRDP before 3.32.2 Denial of Service via Oversized X.224 Routing Token

CVSS Score

5.9

EPSS Score

0.0%

EPSS Percentile

0th

FreeRDP before 3.32.2 contains a denial of service vulnerability that allows malicious servers or unauthenticated peers to abort clients or proxies via oversized X.224 routing tokens. Attackers can send an oversized LoadBalanceInfo in a Server Redirection PDU, or a 240–247 byte token to a FixedTarget freerdp-proxy, triggering a tpdu_write_header assertion that crashes the process.

CWE	CWE-617
Vendor	freerdp
Product	freerdp
Published	Nov 3, 2026

Stay Ahead of the Next One

Get instant alerts for freerdp freerdp

Be the first to know when new medium vulnerabilities affecting freerdp freerdp are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

FreeRDP / FreeRDP

0 < 3.32.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3hf9-w6hr-hf9j vulncheck.com: https://www.vulncheck.com/advisories/freerdp-before-3.32.2-denial-of-service-via-oversized-x-224-routing-token

Credits

Kushalkhemka mayank-jangid-moon opensec-intelligence