Detections
Analytics

ISC BIND 9.16.0 < 9.18.41 / 9.16.8-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-2025-40780)

high Nessus Plugin ID 298817

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-2025-40780 advisory.

 - In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 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, 9.16.8-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-2025-40780)

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-2025-40780

Plugin Details

Severity: High

ID: 298817

File Name: bind9_92114_cve-2025-40780.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: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2025-40780

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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: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: 10/22/2025

Vulnerability Publication Date: 10/22/2025

Reference Information

CVE: CVE-2025-40780