CVE-2026-52690

Spoofed answers can mark an authoritative non-EDNS capable

Published Jun 25, 2026 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6369-1 pdns-recursor security update
History
Type Values Removed Values Added
First Time appeared Powerdns
Powerdns recursor
Vendors & Products Powerdns
Powerdns recursor
Type Values Removed Values Added
Weaknesses CWE-20
Type Values Removed Values Added
Weaknesses CWE-20
Type Values Removed Values Added
Weaknesses CWE-290
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.
Title Spoofed answers can mark an authoritative non-EDNS capable
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
OX
Published
Updated
Jun 25, 2026, 2:21 PM
Reserved
Jun 8, 2026, 8:05 AM
Status
Deferred
Published
Jun 25, 2026, 2:16 PM
Modified
Oct 25, 2026, 11:10 PM