CVE-2025-40776 describes a cache-poisoning vulnerability in BIND 9 named caching resolvers configured to send EDNS Client Subnet (ECS) options, affecting specific versions of BIND 9. This high-severity vulnerability (CVSS 8.6) can be exploited remotely with low complexity, potentially leading to high integrity impact through DNS cache poisoning. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| ISC | BIND 9 | >= 9.11.3-S1, <= 9.16.50-S1, >= 9.18.11-S1, <= 9.18.37-S1, >= 9.20.9-S1, <= 9.20.10-S1CNA affecteddefault unaffected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.