CVE-2026-24028 MEDIUM

CVE-2026-24028: Out-of-bounds read when parsing DNS packets via Lua

Vendor Powerdns
Product DNSdist
Published March 31, 2026
Last update March 31, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

An attacker might be able to trigger an out-of-bounds read by sending a crafted DNS response packet, when custom Lua code uses newDNSPacketOverlay to parse DNS packets. The out-of-bounds read might trigger a crash, leading to a denial of service, or access unrelated memory, leading to potential information disclosure.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
March 31, 2026 Record updated