CVE-2026-57158 | THREATINT

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.

PUBLISHED Reserved 2026-06-24 | Published 2026-07-10 | Updated 2026-07-14 | Assigner GitHub_M

MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-125: Out-of-bounds Read

Product status

>= 3.21.0, < 3.28.0

affected

References

github.com/...reeRDP/security/advisories/GHSA-mp3f-59pg-c5pp exploit

github.com/...reeRDP/security/advisories/GHSA-mp3f-59pg-c5pp

github.com/FreeRDP/FreeRDP/pull/12952

github.com/...ommit/a7e797626fcb7f1d556ce63febb84f9f4a822731

github.com/FreeRDP/FreeRDP/releases/tag/3.28.0

cve.org (CVE-2026-57158)

nvd.nist.gov (CVE-2026-57158)

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