PT-2026-67271
CVE-2026-67291
·
Published
2026-07-08
·
Updated
2026-10-22
Description by
CVSS 4.0
9.3
CriticalMetricsAV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions
FreeRDP versions prior to 3.29.0
Description
A heap out-of-bounds read exists in the
update process glyph fragments() and glyph cache fragment put() functions within libfreerdp/cache/glyph.c. The issue occurs during the handling of a GLYPH FRAGMENT ADD update, where the system reads a one-byte server-controlled declared fragment size without verifying if it fits within the remaining received buffer before allocation and copying. A malicious RDP server can trigger this by sending a short fragment with an oversized declared size, causing the client to read beyond the allocated buffer and crash.Recommendations
Update to version 3.29.0 or later.
Exploitability
Exploit
Fix
Impacts
Vendors
Affected products
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