Vulnerability Details CVE-2026-57158
FreeRDP is a free implementation of the Remote Desktop Protocol. From 3.21.0 before 3.28.0, FreeRDP clients using the GFX pipeline contain an incomplete fix for CVE-2026-23530 in planar_decompress_plane_rle_only in libfreerdp/codec/planar.c, allowing a malicious RDP server to send a truncated RDPGFX_CMDID_WIRETOSURFACE_1 planar payload that reads one byte past the input buffer. This issue is fixed in version 3.28.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 41.0%
CVSS Severity
CVSS v3 Score 9.1
References
Products affected by CVE-2026-57158
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cpe:2.3:a:freerdp:freerdp:3.21.0
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cpe:2.3:a:freerdp:freerdp:3.22.0
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cpe:2.3:a:freerdp:freerdp:3.23.0
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cpe:2.3:a:freerdp:freerdp:3.24.0
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cpe:2.3:a:freerdp:freerdp:3.24.1
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cpe:2.3:a:freerdp:freerdp:3.24.2
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cpe:2.3:a:freerdp:freerdp:3.25.0
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cpe:2.3:a:freerdp:freerdp:3.26.0