CVE-2026-121409

MediumCVSS 5.9/10Last modified Nov 3, 2026

Description

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.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

Vendor	Product	Versions
FreeRDP	FreeRDP	< 3.32.2

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-3hf9-w6hr-hf9jVendor Advisory
https://www.vulncheck.com/advisories/freerdp-before-3.32.2-denial-of-service-via-oversized-x-224-routing-tokenThird Party Advisory

Timeline

Published: Nov 3, 2026
Last modified: Nov 3, 2026
NVD status: Analyzed

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