A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to cache poisoning.
5.2.0-55.2.2-15.2.2-25.2.4-25.2.4-2build23.7.3-14.0.0~alpha1-14.0.0~alpha1-24.0.0~alpha2-24.0.0~alpha2-2ubuntu0.14.0.0~alpha2-2ubuntu0.1+esm1Exploitability
AV:NAC:HPR:NUI:NScope
S:CImpact
C:NI:HA:LCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:L