VULNERABILITY INTELLIGENCE
CVE-2026-40209
CVSS score5.3 MEDIUM
EPSS probability0.70%
CISA KEVNot currently listed
Published2026-06-25
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-772