CVE-2026-27853
Published: Mar 31, 2026
Modified: Mar 31, 2026
CVSS v3.1
5.9
Description
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.
| Vendor | Product | Versions |
|---|---|---|
PowerDNS | DNSdist | affected 1.9.0 - < 1.9.12affected 2.0.0 - < 2.0.3 |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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