An attacker might be able to cause outgoing TCP connections to backend to be stuck until a timeout occurs instead of being released immediately, by sending IXFR queries. This could be used to cause a denial of service if there is a limit to the number of concurrent connections to this backend, or if the process runs out of file descriptors.
History

Thu, 25 Jun 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Thu, 25 Jun 2026 16:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-400

Thu, 25 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-772
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 25 Jun 2026 13:00:00 +0000

Type Values Removed Values Added
Description An attacker might be able to cause outgoing TCP connections to backend to be stuck until a timeout occurs instead of being released immediately, by sending IXFR queries. This could be used to cause a denial of service if there is a limit to the number of concurrent connections to this backend, or if the process runs out of file descriptors.
Title Denial of service via IXFR queries
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: OX

Published: 2026-06-25T12:23:05.694Z

Updated: 2026-06-25T13:56:22.793Z

Reserved: 2026-04-10T07:11:39.060Z

Link: CVE-2026-40209

cve-icon Vulnrichment

Updated: 2026-06-25T13:56:09.847Z

cve-icon NVD

No data.

cve-icon Redhat

No data.