CVE-2026-19662
An attacker may be able to cause a `named` resolver to abort.
Impact
An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Affected products
| Product | Affected versions |
|---|---|
| BIND 9 Versions 9.11.0 | through 9.18.50 |
| 9.20.0 | through 9.20.27 |
| 9.11.3-S1 | through 9.18.50-S1 |
| And 9.20.9-S1 | through 9.20.27-S1. |
Versions were read from the advisory text. No structured product data has been published for this record yet.