MEDIUMCVSS v3.1 4.3Vulnerability

CVE-2026-121396

FreeRDP clients from 3.0.0 before 3.32.2 built with verbose WinPR assertions contain a reachable assertion in rts_read_auth_verifier triggered by malformed RTS padding. Attackers controlling an RD Gateway can send a crafted RPC-over-HTTP RTS PDU with inconsistent authentication padding to abort the connecting client process.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-03T17:20:13.885968+00:00
Cvss score
4.3
Cvss severity
MEDIUM
Retrieved at
2026-11-03T17:21:18+00:00
Score
4.3
Last source
NVD
Cvss version
3.1
Cve id
CVE-2026-121396
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
First seen by Signal
2026-11-03T17:21:18+00:00
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Published at
2026-11-03T15:17:27.457
Last modified
2026-11-03T15:17:27.580

Related Entities (1)

HAS_WEAKNESS (1)

→[Weakness]Reachable Assertion

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CVE-2026-121396 (CVSS v3.1 4.3) — Ninja Signal Threat Intelligence | Ninja Signal