CVE-2026-109255
6.8MediumPublished 12 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
- Impact
- High impact on integrity, availability
- Weakness
- CWE-122
Impact
A malicious RDP server can crash or potentially execute code on a connecting 32-bit client. The attacker needs the user to connect to an untrusted or compromised RDP server.
Root cause
An integer truncation in license_check_stream_length allows large scopeCount values to bypass stream length checks and cause a heap-based buffer overflow.
Affected systems
FreeRDP 3.0.0 before 3.32.0 (specifically impacts 32-bit clients)
CVSS v3.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H
Fix & remediation
Upgrade FreeRDP to version 3.32.0 or newer. As an interim workaround, avoid connecting 32-bit clients to untrusted RDP servers.
$ sudo apt-get update && sudo apt-get install --only-upgrade freerdp3-x11AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.