bind: Cache poisoning due to weak PRNG

A vulnerability was found in BIND resolvers caused by a weakness in the Pseudo Random Number Generator PRNG. This weakness allows an attacker to potentially predict the source port and query ID used by BIND, enabling cache poisoning attacks. If successful, the attacker can inject malicious DNS...

bind: Cache poisoning due to weak PRNG

A vulnerability was found in BIND resolvers caused by a weakness in the Pseudo Random Number Generator PRNG. This weakness allows an attacker to potentially predict the source port and query ID used by BIND, enabling cache poisoning attacks. If successful, the attacker can inject malicious DNS...

CVE-2025-40780

CVE-2025-40780 concerns BIND where a weakness in the PRNG can allow an attacker to predict the source port and query ID used by BIND. Connected advisories confirm this affects multiple BIND9 SPANs across releases (e.g., 9.16.x, 9.18.x, 9.20.x, 9.21.x) and related package updates. The root cause i...