cvedb.io
CVE-2026-25959
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-02-25T21:16:42.023 · Last modified 2026-06-17T10:25:29.627

Summary

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_cliprdr_provide_data_` passes freed `pDstData` to `XChangeProperty` because the cliprdr channel thread calls `xf_cliprdr_server_format_data_response` which converts and uses the clipboard data without holding any lock, while the X11 event thread concurrently calls `xf_cliprdr_clear_cached_data` → `HashTable_Clear` which frees the same data via `xf_cached_data_free`, triggering a heap use after free. Version 3.23.0 fixes the issue.

Affected products

freerdp — freerdp

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.