CVE-2026-109948

4.3Medium

Published 13 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash

4.3Medium

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Impact: Limited impact
Weakness: CWE-200

Impact

A malicious RDP server can read up to 66,560 bytes of uninitialized client heap memory. To trigger this, an attacker must convince a user running the vulnerable client to connect to their rogue server.

Root cause

smartcard_Transmit_Call handles invalid card handles with nonzero receive lengths incorrectly, prompting smartcard_pack_transmit_return to serialize and leak uninitialized heap memory.

Affected systems

FreeRDP 3.0.0 before 3.32.0

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Fix & remediation

Upgrade FreeRDP to version 3.32.0 or later. If patching immediately is not possible, disable smartcard device redirection in your client connection configurations.

shell

$ sudo apt-get update && sudo apt-get install --only-upgrade freerdp3-x11

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

Ad · In-content banner

NVD description

FreeRDP from 3.0.0 before 3.32.0 contains an uninitialized memory disclosure vulnerability in smartcard_Transmit_Call that allows malicious RDP servers to read client memory. Servers can send SCardTransmit requests with an invalid card handle and nonzero receive length, causing smartcard_pack_transmit_return to serialize up to 66,560 uninitialized heap bytes.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-109948