CVE-2023-28450: Thekelleys Dnsmasq

High severity, CVSS 7.5. EPSS: 1.8% chance of exploitation in the next 30 days.

An issue was discovered in Dnsmasq before 2.90. The default maximum EDNS.0 UDP packet size was set to 4096 but should be 1232 because of DNS Flag Day 2020.

Affected products

• Thekelleys Dnsmasq: before 2.90 (fixed in 2.90)

Published 2023-03-15. Last modified 2026-06-17.