PT-2026-52384

CVE-2026-42004

Published

2026-06-25

Updated

2026-08-05

Description by

CVSS 3.1

3.7

Low

MetricsAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions DNSdist (affected versions not specified)

Description An attacker can send a crafted EDNS OPT record that bypasses DNSdist filtering rules. When EDNS Client Subnet is inserted, the record is rewritten as a valid OPT record, allowing the backend to receive EDNS options that were intended to be filtered.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploitability

Exploit

Researchers

Vitaly Simonovich

Vendors

Affected products

Weakness enumeration

CWE-115: Misinterpretation of Input

Related identifiers

CVE-2026-42004

OPENSUSE-SU-2026:11411-1