CVE-2026-31897: Freerdp

Critical severity, CVSS 9.1. EPSS: 0.4% chance of exploitation in the next 30 days.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, there is an out-of-bounds read in freerdp_bitmap_decompress_planar when SrcSize is 0. The function dereferences *srcp (which points to pSrcData) without first verifying that SrcSize >= 1. When SrcSize is 0 and pSrcData is non-NULL, this reads one byte past the end of the source buffer. This vulnerability is fixed in 3.24.0.

Affected products

• Freerdp Freerdp: before 3.24.0 (fixed in 3.24.0)

Published 2026-03-13. Last modified 2026-06-17.