CVE-2026-96888
published 2026-10-21CVE-2026-96888: A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the…
PriorityP344high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.46%
39.7th percentile
A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect.
This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| isc | bind | — | — |
| isc | bind_9 | 9.16.0 – 9.18.50 | — |
| isc | bind_9 | 9.16.8-S1 – 9.18.50-S1 | — |
| isc | bind_9 | 9.20.0 – 9.20.29 | — |
| isc | bind_9 | 9.20.9-S1 – 9.20.29-S1 | — |
| isc | bind_9 | 9.21.0 – 9.21.26 | — |
| isc | dhcp | — | — |
| openshift | ose-rhel-coreos-8 | — | — |
| openshift | ose-rhel-coreos-9 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat7.5HIGH
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Red Hat
bind: bind: Denial of Service via assertion failure during redirect processing
vendor_redhat·2026-10-21·CVSS 7.5
CVE-2026-96888 [HIGH] CWE-617 bind: bind: Denial of Service via assertion failure during redirect processing
bind: bind: Denial of Service via assertion failure during redirect processing
A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect.
This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.
A flaw was found in BIND. A remote attacker can cause a Denial of Service (DoS) by sending requests that trigger an assertion failure, abruptly terminating the resolver daemon. This vulnerability occurs when the resolver is configured with both a redirect zone and strict query name minimization while processing redirected queries.
Statement: This vulnerability is rated as Important
GHSA
A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect.
ghsa_unreviewed·2026-10-21
CVE-2026-96888 [HIGH] CWE-476 A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect.
A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect.
This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-96888 dhcp: bind: Denial of Service via assertion failure during redirect processing [fedora-all]
bugzilla·2026-10-21·CVSS 7.5
CVE-2026-96888 [HIGH] CVE-2026-96888 dhcp: bind: Denial of Service via assertion failure during redirect processing [fedora-all]
CVE-2026-96888 dhcp: bind: Denial of Service via assertion failure during redirect processing [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect.
Bugzilla
CVE-2026-96888 bind: bind: Denial of Service via assertion failure during redirect processing [fedora-all]
bugzilla·2026-10-21·CVSS 7.5
CVE-2026-96888 [HIGH] CVE-2026-96888 bind: bind: Denial of Service via assertion failure during redirect processing [fedora-all]
CVE-2026-96888 bind: bind: Denial of Service via assertion failure during redirect processing [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect.
Bugzilla
CVE-2026-96888 bind: bind: Denial of Service via assertion failure during redirect processing
bugzilla·2026-10-20·CVSS 7.5
CVE-2026-96888 [HIGH] CVE-2026-96888 bind: bind: Denial of Service via assertion failure during redirect processing
CVE-2026-96888 bind: bind: Denial of Service via assertion failure during redirect processing
A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect.
2026-10-21
Published