CVE-2025-40778
HIGHBIND <9.21 - Info Disclosure
Title source: llmDescription
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.
Exploits (3)
nomisec
WRITEUP
1 stars
by nicholasC03 · poc
https://github.com/nicholasC03/DNS-Poisoning-Triage-Lab
nomisec
WORKING POC
by sirbuvladste · poc
https://github.com/sirbuvladste/BIND-9-Cache-Poisoning-PoC---CVE-2025-40778
Scores
CVSS v3
8.6
EPSS
0.0001
EPSS Percentile
0.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Details
CWE
CWE-349
Status
published
Products (7)
ISC/BIND 9
9.11.0 - 9.16.50
ISC/BIND 9
9.11.3-S1 - 9.16.50-S1
ISC/BIND 9
9.18.0 - 9.18.39
ISC/BIND 9
9.18.11-S1 - 9.18.39-S1
ISC/BIND 9
9.20.0 - 9.20.13
ISC/BIND 9
9.20.9-S1 - 9.20.13-S1
ISC/BIND 9
9.21.0 - 9.21.12
Published
Oct 22, 2025
Tracked Since
Feb 18, 2026