CVE-2026-96888
bind: bind: Denial of Service via assertion failure during redirect processing
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 21, 2026
Updated · November 4, 2026
Description
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 because an unauthenticated remote attacker can trigger a denial of service by causing the named daemon to crash without prior privileges. Exploitation is restricted to recursive resolvers where administrators have explicitly configured redirect zones alongside strict query name minimization. Standard Red Hat Enterprise Linux installations do not employ these non-default settings out of the box, significantly limiting exposure on typical systems.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-617 · Reachable Assertion