Vulnerability details
CVE-2025-40778
ISC BIND 9
Cache poisoning attacks with unsolicited RRs
CVSS 3.1
8.6High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.6High | 3.1 | CVEProject cvelistV5 (CNA) (isc) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| ISC | BIND 9 | 9.11.0 ≤ v ≤ 9.16.50 | CVEProject cvelistV5 (CNA) |
| ISC | BIND 9 | 9.11.3-S1 ≤ v ≤ 9.16.50-S1 | CVEProject cvelistV5 (CNA) |
| ISC | BIND 9 | 9.18.0 ≤ v ≤ 9.18.39 | CVEProject cvelistV5 (CNA) |
| ISC | BIND 9 | 9.18.11-S1 ≤ v ≤ 9.18.39-S1 | CVEProject cvelistV5 (CNA) |
| ISC | BIND 9 | 9.20.0 ≤ v ≤ 9.20.13 | CVEProject cvelistV5 (CNA) |
| ISC | BIND 9 | 9.20.9-S1 ≤ v ≤ 9.20.13-S1 | CVEProject cvelistV5 (CNA) |
| ISC | BIND 9 | 9.21.0 ≤ v ≤ 9.21.12 | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2025-10-22
- Last updated
- 2026-02-26
- State
- Published
- Assigner (CNA)
- isc
Exploit prediction (EPSS)
0.66%
Probability of exploitation in 30 days
52.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-349Acceptance of Extraneous Untrusted Data With Trusted Data