A freerdp security update has been released for CentOS 6.

CentOS-announce: CESA-2020:2406 Important CentOS 6 freerdp Security Update

CentOS Errata and Security Advisory 2020:2406 Important

Upstream details at :   https://access.redhat.com/errata/RHSA-2020:2406

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

i386:
40052c3b9715a48e1c9af9e95e7a6066e0ec0ed6608657324f3fe355e9c1b8f5 freerdp-1.0.2-7.el6_10.i686.rpm
0df0853d13fc8d3dfc3c993ef2113eea6cc09943032ef6fc9efa04af8911edc7 freerdp-devel-1.0.2-7.el6_10.i686.rpm
464c929ecb74502cbf75b962255982726981f146606c08bc84f14b8d5dd60c48 freerdp-libs-1.0.2-7.el6_10.i686.rpm
08de995c79b51a1e8d0bce2e35a9e2098589f539ac2710edb4c1886c64d4bda5 freerdp-plugins-1.0.2-7.el6_10.i686.rpm

x86_64:
84e0e22103a6f530bf3c3542f32b2cad958f1034405521dc76242e3a55609764 freerdp-1.0.2-7.el6_10.x86_64.rpm
0df0853d13fc8d3dfc3c993ef2113eea6cc09943032ef6fc9efa04af8911edc7 freerdp-devel-1.0.2-7.el6_10.i686.rpm
3ce674caf8c636d8c54a86ffcc210c50e2c5599d553edcc29ce39771d62f05c1 freerdp-devel-1.0.2-7.el6_10.x86_64.rpm
464c929ecb74502cbf75b962255982726981f146606c08bc84f14b8d5dd60c48 freerdp-libs-1.0.2-7.el6_10.i686.rpm
72def2a742c6b8b1d28a81a99d042d2b4646ce169908dcaf47e5b067e6e6b7af freerdp-libs-1.0.2-7.el6_10.x86_64.rpm
f4e577036c923c1f84f11ae1310043f44260d4cc51b2857060099e40ab150895 freerdp-plugins-1.0.2-7.el6_10.x86_64.rpm

Source:
28cbed327abc58d60686810bbba51cc577d10516d3ef77f361830ba2964005bf freerdp-1.0.2-7.el6_10.src.rpm