CVE-2026-121958

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.

High
CVSS
7.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0030
23rd percentile

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

ProductFixed inFixReleased
Linux
freerdp3 · Debian 14 3.32.2+dfsg-1 DEBIAN-CVE-2026-121958 Nov 5, 2026

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