CVE-2025-40780

HIGH EPSS 36.2%

Published Oct 22, 20258mo ago · Modified Jun 17, 20261w ago

8.6 CVSS 3.1

High

Published Oct 22, 2025 8mo ago

Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score

8.6

Exploitability

3.9

Impact

4.0

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Changed

Confidentiality None

Integrity High

Availability None

Threat Intelligence

EPSS Exploit Probability

36.2% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-341

References 2

openwall.com http://www.openwall.com/lists/oss-security/2025/10/22/1
kb.isc.org https://kb.isc.org/docs/cve-2025-40780

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.