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CVE

CVE-2025-40778

Under certain circumstances, BIND is too lenient when accepting records from answers, allowing an attacker to inject for

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.

HIGH · CVSS 8.6 EPSS 5e-05
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-349Acceptance of Extraneous Untrusted Data With Trusted Data
▣

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · security-officer@isc.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD22 Oct 2025 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

30
rhsaRHSA-2026:6935Moderate
suse-csafopenSUSE-SU-2026:20039-1
suse-csafSUSE-SU-2026:20085-1
msrcCVE-2025-40778
suse-csafSUSE-SU-2025:4222-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://kb.isc.org/docs/cve-2025-40778
http://www.openwall.com/lists/oss-security/2025/10/22/1
https://gist.github.com/N3mes1s/f76b4a606308937b0806a5256bc1f918
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