Vulnerability DatabaseCVE-2025-40778
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CVE-2025-40778
October 22, 2025
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.
Affected Packages
https://gitlab.isc.org/isc-projects/bind9.git (SCM_GIT):
Affected version(s) >=v9.20.0 <v9.20.15
Fix Suggestion:
Update to version v9.20.15
https://gitlab.isc.org/isc-projects/bind9.git (SCM_GIT):
Affected version(s) >=v9.18.0 <v9.18.41
Fix Suggestion:
Update to version v9.18.41
https://gitlab.isc.org/isc-projects/bind9.git (SCM_GIT):
Affected version(s) >=v9.21.0 <v9.21.14
Fix Suggestion:
Update to version v9.21.14
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CVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Acceptance of Extraneous Untrusted Data With Trusted Data
CWE-349