resolver.c in named in ISC BIND 9.10.x before 9.10.3-P4, when DNS cookies are enabled, allows remote attackers to cause a denial of service (INSIST assertion failure and daemon exit) via a malformed packet with more than one cookie option.
Severity
CVSS 3.0
6.8 medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS
23% chance of exploitation in the next 30 days; higher than 97% of CVEs (scores of 2026-10-31)