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CVE-2026-40012 Details

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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URL	Source(s)	Tag(s)
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html	[email protected]	Broken LinkVendor

CWE-ID	CWE Name	Source
CWE-524	Use of Cache Containing Sensitive Information	CISA-ADP

Product	Versions
Open-Xchange	All versions
CPE No CPEs found in CPE dictionary for this product. Remediation Workaround:low effort Disable ECS (EDNS Client Subnet) in the configuration.

2 change records found show changes

Date	Action	Recorded By
Jun 25, 2026	CVE Modified	CISA-ADP
Jun 25, 2026	New CVE Received	[email protected]

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