CVE-2025-40778
Cache poisoning attacks with unsolicited RRs
At a glance
- Severity
- HIGH 8.6
- EPSS
- EPSS 0.67 % · percentile 52 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- isc
- NVD status
- Deferred
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.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N | isc |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N | NVD · security-officer@isc.org (Secondary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2025-35581
- GCVE · GCVE-0-2025-40778
CERT-FR advisories
- CERTFR-2026-AVI-1376 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0326 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0316 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1108 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0969 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0941 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0913 — Multiples vulnérabilités dans ISC BIND · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| ISC · BIND 9 | affected 9.11.0 ≤ 9.16.50 ; affected 9.18.0 ≤ 9.18.39 ; affected 9.20.0 ≤ 9.20.13 ; affected 9.21.0 ≤ 9.21.12 ; affected 9.11.3-S1 ≤ 9.16.50-S1 ; affected 9.18.11-S1 ≤ 9.18.39-S1 |
References
- https://kb.isc.org/docs/cve-2025-40778
- https://gist.github.com/N3mes1s/f76b4a606308937b0806a5256bc1f918
- http://www.openwall.com/lists/oss-security/2025/10/22/1
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |