CVE-2026-42004

An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS options that DNSdist did not filter...

EulerOS 2.0 SP12 : unbound (EulerOS-SA-2025-2344)

According to the versions of the unbound packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A multi-vendor cache poisoning vulnerability named 'Rebirthday Attack' has been discovered in caching resolvers that support EDNS Client Subnet...

Huawei EulerOS: Security Advisory for unbound (EulerOS-SA-2025-2218)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

dns-client-subnet-scan NSE Script

Performs a domain lookup using the edns-client-subnet option which allows clients to specify the subnet that queries supposedly originate from. The script uses this option to supply a number of geographically distributed locations in an attempt to enumerate as many different address records as...