CVE-2026-96888CWE-476CWE-617

CVE-2026-96888

High · published October 21, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
39.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00461 · 39.0th percentile
Weaknesses
CWE-476 · NULL Pointer Dereference; CWE-617 · Reachable Assertion
Published
2026-10-21T17:21Z
References (3)
https://downloads.isc.org/isc/bind9/9.20.30 · [email protected]https://downloads.isc.org/isc/bind9/9.21.27 · [email protected]https://kb.isc.org/docs/cve-2026-96888 · [email protected]
EPSS history
Timeline
  • 23 OCT 04:10Z
    EPSS moved — → 0%
    epss
  • 21 OCT 12:46Z
    Named may terminate unexpectedly when a redirect zone is used with strict QNAME minimization
    cvelistv5
  • 21 OCT 12:46Z
    Named may terminate unexpectedly when a redirect zone is used with strict QNAME minimization
    cvelistv5