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Affected Component
Analysis
freerdp
Exploitable
Name
CVE-2026-55564
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, the glyph_cache_get function in libfreerdp/cache/glyph.c checks whether index is greater than cache->number instead of greater than or equal to it. A malicious RDP server can use GLYPH_FRAGMENT_USE replay in update_process_glyph_fragments to make the default cache receive index 254 when cache->number is 254, reading one pointer beyond the entries array and dereferencing it as a glyph. This can crash the client and may disclose adjacent heap data. This issue is fixed in version 3.27.0.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/FreeRDP/FreeRDP/pull/12885Issue Tracking
Analysis#
Vulnerability Ratings#
5.4
CVSSv31
7.1
CVSSv31
NaN
other