CVE-2026-3104

HIGH

Memory leak in code preparing DNSSEC proofs of non-existence

Title source: cna
STIX 2.1

Description

A specially crafted domain can be used to cause a memory leak in a BIND resolver simply by querying this domain. This issue affects BIND 9 versions 9.20.0 through 9.20.20, 9.21.0 through 9.21.19, and 9.20.9-S1 through 9.20.20-S1. BIND 9 versions 9.18.0 through 9.18.46 and 9.18.11-S1 through 9.18.46-S1 are NOT affected.

References (7)

Core 7

Scores

CVSS v3 7.5
EPSS 0.0070
EPSS Percentile 49.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-401 CWE-772
Status published
Products (6)
isc/bind 9.20.0 - 9.20.21
ISC/BIND 9 9.18.0 - 9.18.46
ISC/BIND 9 9.18.11-S1 - 9.18.46-S1
ISC/BIND 9 9.20.0 - 9.20.20
ISC/BIND 9 9.20.9-S1 - 9.20.20-S1
ISC/BIND 9 9.21.0 - 9.21.19
Published Mar 25, 2026
Tracked Since Mar 25, 2026