CVE-2026-57158
Critical
Description
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.
SeverityCritical
CVSS9.1
Exploit probability—
ProductFreerdp
PublishedJul 10, 2026
First seenJul 10, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- freerdp freerdp3.28.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| freerdp freerdp | 3.21.0 ≤ v < 3.28.0 | 3.28.0 |
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