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CVE PROGRAM SOURCE RECORD7.7 High

CVE-2026-91948

FreeRDP before 3.31.0 Out-of-bounds Write via SHOW_PROTOCOL

Description

FreeRDP versions before 3.31.0 contain an out-of-bounds write vulnerability in server-side static virtual channel handling when CHANNEL_OPTION_SHOW_PROTOCOL is enabled. Authenticated clients can queue oversized channel messages that cause buffer underflow and corrupt heap memory including live pointers, potentially enabling code execution.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

FreeRDP FreeRDP

Default version status: unaffected

  • 3.28.0 to < 3.31.0affected
  • 3.31.0unaffected

References