CVE-2026-45700
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
CVSS
9.8
Crítico
EPSS
0.5%
p40
KEV
—
Exploit Today
12
0-100
Publicado: 29 may 2026 · Última mod.: 15 jul 2026 · CWE-787
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.
- github.comhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mpxh-8fq3-x8mh
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:36203
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:37207
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:38501
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-45700
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2483470
- github.comhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mpxh-8fq3-x8mh
- security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45700.json