CVE-2026-109945

FreeRDP 3.0.0 before 3.32.0 contains a heap use-after-free vulnerability in smartcard emulation when SCARD_IOCTL_DISCONNECT and SCARD_IOCTL_TRANSMIT operate concurrently on one card handle. A malicious RDP server can overlap these IRPs through separate context workers to free and reuse the SCardHandle, causing client-process heap corruption and termination.

CVSS 4.0

6.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-25)

CWE

CWE-362

Published

2026-10-13

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

Affected

• freerdp:freerdp

References

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8rpr-jjjg-5qv6
• https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-smartcard-use-after-free-via-concurrent-disconnect-and-transmit
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8rpr-jjjg-5qv6

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