CVE-2026-91948 — FreeRDP before 3.31.0 Out-of-bounds Write via SHOW_PROTOCOL
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. Authenti…
Published: 2026-09-15 · CVSS: 7.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7