Insufficient verification of data authenticity in Unbound - CVE-2025-11411
Published: October 22, 2025 / Updated: December 3, 2025
Vulnerability identifier: #VU117534
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-11411
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: NLnet Labs
Affected software:
Unbound
Unbound
Detailed vulnerability description
The vulnerability allows a remote attacker to poison DNS cache.
The vulnerability exists due to incorrect processing of DNS responses contain NS RRSets records. A remote attacker can poison DNS cache of the affected server.How to mitigate CVE-2025-11411
Install updates from vendor's website.