ISC BIND 9.11.0 < 9.11.37 / 9.11.4-S1 < 9.11.37-S1 / 9.12.0 < 9.16.27 / 9.16.8-S1 < 9.16.27-S1 / 9.17.0 < 9.18.1 Vulnerability (CVE-2021-25220)

medium Nessus Plugin ID 159110


The remote name server is affected by a vulnerability vulnerability.


The version of ISC BIND installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-25220 advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade to ISC BIND version 9.11.37 / 9.11.37-S1 / 9.16.27 / 9.16.27-S1 / 9.18.1 or later.

See Also

Plugin Details

Severity: Medium

ID: 159110

File Name: bind9_CVE-2021-25220.nasl

Version: 1.6

Type: remote

Family: DNS

Published: 3/21/2022

Updated: 12/12/2022

Configuration: Enable paranoid mode

Risk Information


Risk Factor: Medium

Score: 5.2


Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS Score Source: CVE-2021-25220


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:isc:bind

Required KB Items: bind/version, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 3/16/2022

Vulnerability Publication Date: 3/16/2022

Reference Information

CVE: CVE-2021-25220

IAVA: 2022-A-0122-S