When HAVE_ENCRYPT_THEN_MAC is configured, the implementation could fall back to MAC-then-Encrypt rather than enforcing Encrypt-then-MAC.
Exploitability
AV:AAC:HAT:PPR:LUI:NVulnerable System
VC:LVI:NVA:NSubsequent System
SC:NSI:NSA:N2.1/CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/U:ClearOther