#VU124615 Missing release of memory after effective lifetime in ISC BIND - CVE-2026-3104
Published: March 25, 2026
Vulnerability identifier: #VU124615
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-3104
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
ISC BIND
ISC BIND
Software vendor:
ISC
ISC
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper memory management in the DNSSEC proof preparation component when handling recursive queries for a specially crafted domain. A remote attacker can send a specially crafted domain query to cause unbounded memory consumption, leading to an out-of-memory condition and potential service termination during shutdown or reload.
Resolvers are affected; authoritative servers may be at risk if they perform recursive queries.
Remediation
Install security update from vendor's website.