CVE-2026-121409Medium· 5.9▾ TwilightPoC availableFreeRDP 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 32.5 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Nov 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.3%
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.
FreeRDP < 3.32.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-121951High· 7.5FreeRDP 3.0.0 before 3.32.2 Denial of Service via Slow-Path Input Event
CVE-2026-121960High· 7.5FreeRDP before 3.32.2 Unauthenticated Denial of Service via CredSSP TSRequest
CVE-2026-121389Low· 3.1FreeRDP 3.27.0 before 3.32.2 Client DoS via RDPDR Device Announcement Logging
CVE-2026-121393Medium· 6.5FreeRDP 3.0.0 before 3.32.2 Denial of Service via RemoteFX Region Assertion
CVE-2026-121406Medium· 4.3FreeRDP before 3.32.2 Client Denial of Service via Zero-Output ZGFX Payload
CVE-2026-121394Medium· 6.5FreeRDP before 3.32.2 Denial of Service via RemoteFX RLGR decoder