Version in base suite: 1+15.4+7~deb10u1
Version in overlay suite: 1+15.6+1~deb10u1

Base version: shim-helpers-amd64-signed_1+15.4+7~deb10u1
Target version: shim-helpers-amd64-signed_1+15.6+1~deb10u1
Base files: shim-helpers-amd64-signed_1+15.4+7~deb10u1_amd64.deb
Target files: shim-helpers-amd64-signed_1+15.6+1~deb10u1_amd64.deb

-E: portable-executable-missing-security-features usr/lib/shim/fbx64.efi.signed ASLR DEP/NX
-E: portable-executable-missing-security-features usr/lib/shim/mmx64.efi.signed ASLR DEP/NX