CVEvulnerability

CVE-2026-109952

6.0 MEDIUM Published 2026-10-13 Modified 2026-10-21 Official page ↗
Status
Analyzed
Published
2026-10-13
Last modified
2026-10-21
Assigner
[email protected]
CVSS 4.0 ([email protected])
6.0 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Weaknesses
CWE-757

Description

The FreeRDP client 3.0.0 before 3.32.0 does not check a server-selected PROTOCOL_RDSTLS or PROTOCOL_HYBRID_EX against its enabled protocol set in nego_process_negotiation_response(), allowing a security protocol downgrade. A malicious server or man-in-the-middle can select RDSTLS to override /sec:nla pinning, complete authentication with an all-zero cookie, and receive the user's cleartext password in the Client Info PDU.

Affected configurations

• freerdp freerdp (>= 3.0.0 < 3.32.0)

Related

Weakness · CWE (1)

  • CWE-757 Selection of Less-Secure Algorithm During Negotiation weakness

References