CVE-2026-40012
pdns-recursor: ECS zero scoped answers are stored in the packet cache while they should not
CVE-2026-40012 is fixed in pdns-recursor on 1 platform, first by DEBIAN-CVE-2026-40012, released June 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.3
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0045
39th percentile
ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pdns-recursor · Debian 13.5 (trixie) | 5.2.11-0+deb13u1 | DEBIAN-CVE-2026-40012 | Jun 26, 2026 |
| pdns-recursor · Debian 14 | 5.4.3-1 | DEBIAN-CVE-2026-40012 | Jun 26, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.