CVE-2025-40778
bind9 - security update
8.6
HIGH
CVSS 3.1
EPSS 0.01%
Description
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.
How to fix CVE-2025-40778
To remediate CVE-2025-40778, upgrade the affected package to a fixed version below.
- —upgrade to 9.18.41-r0 or later
- —upgrade to 1:9.16.50-1~deb11u4 or later
- —upgrade to 1:9.16.50-1~deb11u4 or later
- —upgrade to 1:9.18.41-1~deb12u1 or later
Is CVE-2025-40778 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 9.18.41-r0
- from 0, < 1:9.16.50-1~deb11u4
- from 0, < 1:9.16.50-1~deb11u4
- from 0, < 1:9.18.41-1~deb12u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N |