freerdp3: FreeRDP through 3.32.1 has a heap out-of-bounds write in the RDPGFX client because the delete_surface callback trunca...
CVE-2026-121958 is fixed in freerdp3 on 1 platform by DEBIAN-CVE-2026-121958 (version 3.32.2+dfsg-1), released November 5, 2026. It is not reported as exploited. Patch Radar priority: High.
FreeRDP through 3.32.1 has a heap out-of-bounds write in the RDPGFX client because the delete_surface callback truncates surface hash keys to 16 bits, leaving the surface table inconsistent so HashTable_GetKeys writes past its allocated key array. A malicious or man-in-the-middle RDP server can exploit this by creating surfaceId 0xFFFF, closing the RDPGFX channel, sending repeated DELETESURFACE PDUs, and then sending ENDFRAME or RESETGRAPHICS.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| freerdp3 · Debian 14 | 3.32.2+dfsg-1 | DEBIAN-CVE-2026-121958 | Nov 5, 2026 |
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