high7.5
CVE-2026-19630
In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND.
Impact
In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.
Affected products
| Product | Affected versions |
|---|---|
| BIND 9 Versions 9.11.0 | through 9.18.50 |
| 9.20.0 | through 9.20.29 |
| 9.21.0 | through 9.21.26 |
| 9.11.3-S1 | through 9.18.50-S1 |
| And 9.20.9-S1 | through 9.20.29-S1. |
Versions were read from the advisory text. No structured product data has been published for this record yet.