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CVE-2026-55827

FreeRDP: Heap out-of-bounds write in RemoteFX (RFX) Cache Bitmap V3 decode PUBLISHED

Description (CNA)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap->data only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.

Affected (CNA)

Vendor / productVersions
FreeRDP / FreeRDPaffected < 3.27.1

CWE

CWE-131, CWE-787

References

ADP enrichment

CISA-ADP

No English description supplied.