MEDIUMCVSS v3.1 5.9Vulnerability

CVE-2026-121409

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.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-03T17:20:13.885968+00:00
Cvss severity
MEDIUM
Cvss score
5.9
Retrieved at
2026-11-03T17:21:18+00:00
Score
5.9
Cvss version
3.1
Last source
NVD
Cve id
CVE-2026-121409
Cvss vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
First seen by Signal
2026-11-03T17:21:18+00:00
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published at
2026-11-03T15:17:29.790
Last modified
2026-11-03T15:58:44.480

Related Entities (2)

AFFECTS_PRODUCT (1)

→[Product]freerdp freerdp

HAS_WEAKNESS (1)

→[Weakness]Reachable Assertion

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CVE-2026-121409 (CVSS v3.1 5.9) — Ninja Signal Threat Intelligence | Ninja Signal