CVE-2026-109952

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Source
https://cve.org/CVERecord?id=CVE-2026-109952
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109952.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-109952
Aliases
  • GHSA-qq23-mqmv-pc65
Downstream
Published
2026-10-13T13:27:17Z
Modified
2026-10-14T02:48:28Z
Severity
  • 6.0 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
FreeRDP 3.0.0 before 3.32.0 Security Protocol Downgrade via Negotiation Response
Details

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.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-757"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109952.json"
}
References

Affected packages

Git / github.com/freerdp/freerdp

Affected ranges

Type
GIT
Repo
https://github.com/freerdp/freerdp
Events
Introduced
a34fa7c49d2a39aa49ace1d7bea9656912d8c7cb
Fixed
d27a4f7c1c63b62a5e60e5d939ad116cfb58ffc1
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "3.0.0"
        },
        {
            "fixed":  "3.32.0"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

3.*
3.0.0
3.1.0
3.2.0
3.3.0
3.4.0
3.5.0
3.5.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109952.json"