CVE-2025-30192CWE-345

A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts

High · published July 21, 2025

CVSS v3.1
7.5
EPSS
0%
Percentile
18.6
In the wild
Unconfirmed
What it is

An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries.

The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers.

The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00272 · 18.6th percentile
Weakness
CWE-345 · Insufficient Verification of Data Authenticity
Published
2025-07-21T12:49Z
EPSS history
Timeline
  • 21 JUL 12:49Z
    A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts
    cvelistv5