| Name | CVE-2026-40012 |
| Description | ECS zero scoped answers are stored in the packet cache while they shou ... |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-6369-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| pdns-recursor (PTS) | bullseye | 4.4.2-3 | vulnerable |
| bookworm, bookworm (security) | 4.8.8-1+deb12u1 | vulnerable |
| trixie | 5.2.9-0+deb13u1 | vulnerable |
| trixie (security) | 5.2.11-0+deb13u1 | fixed |
| forky, sid | 5.4.2-2 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - pdns-recursor <end-of-life> (see DSA 6045)
[bullseye] - pdns-recursor <end-of-life> (see DSA 6045)
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2026-08.html#cve-2026-40012-information-about-ecs-zero-scoped-answers-might-leak-to-clients-that-use-a-specific-ecs