by Kastro CVE-2026-45700
FreeRDP FreeRDP — Heap-buffer-overflow write in planar bitmap decoder
Description · from the CVE record
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdp_bitmap_decompress_planar() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planar_decompress_plane_rle() to write past the end of pTempData. This vulnerability is fixed in 3.26.0.
Affected
ProductAffectedFixed inSource
FreeRDP< 3.26.0–CNA
Red Hat Enterprise Linux 10see advisory2:3.10.3-12.el10_2.6redhat-SADP
Red Hat Enterprise Linux 10.0 Extended Update Supportsee advisory2:3.10.3-3.el10_0.9redhat-SADP
Red Hat Enterprise Linux 7 Extended Lifecycle Supportsee advisory0:2.1.1-5.el7_9.10redhat-SADP
Red Hat Enterprise Linux 8see advisory2:2.11.7-10.el8_10redhat-SADP
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportsee advisory2:2.2.0-14.el8_4.1redhat-SADP
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onsee advisory2:2.2.0-14.el8_4.1redhat-SADP
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportsee advisory2:2.2.0-7.el8_6.9redhat-SADP
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onsee advisory2:2.2.0-7.el8_6.9redhat-SADP
Red Hat Enterprise Linux 8.8 Telecommunications Update Servicesee advisory2:2.2.0-12.el8_8.9redhat-SADP
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionssee advisory2:2.2.0-12.el8_8.9redhat-SADP
Red Hat Enterprise Linux 9see advisory2:2.11.7-7.el9_8.4redhat-SADP
Scores by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
redhat-SADP (CNA)8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
GitHub_M (CNA)7.7CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total