CVE-2026-40012: Information about ECS zero scoped answers might leak to clients that use a specific ECS
PowerDNS · Recursor
Vendor fix available · Affected: PowerDNS Recursor · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 39% of scored CVEs
DescriptionCVE.org
ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- PowerDNS · Recursorfrom 5.2.0 before 5.2.11; from 5.3.0 before 5.3.8; from 5.4.0 before 5.4.3
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
CoverageNo articles yet
No CyberSIXT article names CVE-2026-40012 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.