Reachable Assertion Affecting freerdp/freerdp package, versions [,3.29.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-FREERDPFREERDP-19352826
- published27 Aug 2026
- disclosed1 Aug 2026
- creditUnknown
Introduced: 1 Aug 2026
NewCVE-2026-67303 (opens in a new tab)How to fix?
Upgrade freerdp/freerdp to version 3.29.0 or higher.
Overview
Affected versions of this package are vulnerable to Reachable Assertion via the serial_process_irp_device_control process. An attacker can cause the client process to abort by sending a specially crafted IRP_MJ_DEVICE_CONTROL request with an unsupported IOCTL and a non-zero OutputBufferLength, leading to a mismatch that triggers a reachable assertion. This is only exploitable if serial device redirection is enabled.