ISC BIND 9.11.0 < 9.18.41 / 9.11.3-S1 < 9.18.41-S1 / 9.18.0 < 9.18.41 / 9.18.11-S1 < 9.18.41-S1 / 9.20.0 < 9.20.15 / 9.20.9-S1 < 9.20.15-S1 / 9.21.0 < 9.21.14 Vulnerability (cve-2025-40778)

high Nessus Plugin ID 298819

Synopsis

The remote name server is affected by a vulnerability vulnerability.

Description

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-2025-40778 advisory.

- Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject forged data into the cache. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1. (CVE-2025-40778)

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

Solution

Upgrade to ISC BIND version 9.18.41 / 9.18.41-S1 / 9.20.15 / 9.20.15-S1 / 9.21.14 or later.

See Also

https://kb.isc.org/v1/docs/cve-2025-40778

Plugin Details

Severity: High

ID: 298819

File Name: bind9_92114_cve-2025-40778.nasl

Version: 1.1

Type: remote

Family: DNS

Published: 2/12/2026

Updated: 2/12/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2025-40778

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/a:isc:bind

Required KB Items: bind/version, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/22/2025

Vulnerability Publication Date: 10/22/2025

Reference Information

CVE: CVE-2025-40778