ReadyNet WRT300N-DD devices with firmware 1.0.26 use the same source port number for every DNS query, which makes it easier for remote attackers to spoof responses by selecting that number for the destination port.
Severity
CVSS 3.0
5.8 medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EPSS
1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)