CVE-2026-57158

FreeRDP planar_decompress_plane_rle_only: heap OOB read — incomplete fix for CVE-2026-23530

CVSS 5.1 MEDIUMCWE-125

Vexday Risk Score

10Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.1EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

10 Jul 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

FreeRDP · FreeRDP

References

https://github.com/FreeRDP/FreeRDP/commit/a7e797626fcb7f1d556ce63febb84f9f4a822731 https://github.com/FreeRDP/FreeRDP/pull/12952 https://github.com/FreeRDP/FreeRDP/releases/tag/3.28.0 https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mp3f-59pg-c5pp