AUGUST 24, 2026
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Case File

CVE-2026-40209

MEDIUM · CVSS 5.3 EPSS 0.29%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-06-25 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. It may lead to a denial-of-service condition.

CVE
CVE-2026-40209
Severity
MEDIUM
CVSS
5.3
EPSS
0.29%

Original NVD 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.