CVE-2025-40776
Fixed in a distro release EPSS <1%CVSS 8.6
A `named` caching resolver that is configured to send ECS (EDNS Client Subnet) options may be vulnerable to a cache-poisoning attack. This issue affects BIND 9 versions 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.37-S1, and 9.20.9-S1 through 9.20.10-S1.
Products: ISC BIND 9
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.22 | bind | 9.20.11-r0 |
| Alpine 3.23 | bind | 9.20.11-r0 |
| Alpine 3.24 | bind | 9.20.11-r0 |
| Chainguard | bind-dnssec-root | 0 |
| Wolfi | bind-dnssec-root | 0 |