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.
Metrics
Affected Vendors & Products
References
History
Thu, 22 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 22 Oct 2026 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Isc bind 9
|
|
| Vendors & Products |
Isc bind 9
|
Thu, 22 Oct 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat
Redhat hummingbird |
|
| Weaknesses | CWE-770 | |
| CPEs | cpe:/a:redhat:hummingbird:1 | |
| Vendors & Products |
Redhat
Redhat hummingbird |
|
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Wed, 21 Oct 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Amplified resource exhaustion in inbound message processing | |
| First Time appeared |
Isc
Isc bind |
|
| Weaknesses | CWE-407 | |
| CPEs | cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Isc
Isc bind |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: isc
Published: 2026-10-21T12:41:04.379Z
Updated: 2026-10-21T17:19:14.434Z
Reserved: 2026-08-12T15:49:27.570Z
Link: CVE-2026-19630
Updated: 2026-10-21T17:10:01.170Z
Status : Awaiting Analysis
Published: 2026-10-21T13:18:32.453
Modified: 2026-10-22T17:36:46.950
Link: CVE-2026-19630