medium5.9
CVE-2026-27853
An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:chang…
Impact
An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:changeName methods in custom Lua code. In some cases the rewritten packet might become larger than the initial response and even exceed 65535 bytes, potentially leading to a crash resulting in denial of service.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Powerdns | Dnsdist | from 1.9.0 before 1.9.12 from 2.0.0 before 2.0.3 |