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.
PoC: DNS-Poisoning-Triage-Lab
Forensic triage of DNS cache poisoning in legacy hardware. Includes PCAP analysis of 839-byte unsolicited record injections, CVE-2025-40778 mapping, and remediation via hardened Unbound (DoT) on Arch Linux.
PoC: BIND-9-Cache-Poisoning-PoC---CVE-2025-40778
Proof of Concept for CVE-2025-40778: BIND 9 DNS Cache Poisoning via unsolicited Additional Section records.
PoC: CVE-2025-40778
POC CVE-2025-40778: Cache Poisoning BIND 9 👾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
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