What is CVE-2026-109945?

CVE-2026-109945 is a medium-severity vulnerability in Freerdp, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2026-10-13.

How severe is CVE-2026-109945?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Freerdp

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.

Vulnerability class: Race Condition

Published 2026-10-13.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Freerdp

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8rpr-jjjg-5qv6 (vendor-advisory)
www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-smartcard-use-after-fr… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109945?: CVE-2026-109945 is a medium-severity vulnerability in Freerdp, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.3/10. Published 2026-10-13.
How severe is CVE-2026-109945?: Medium severity. CVSS v3 base score is 5.3 out of 10.