CVE-2026-52690 — MEDIUM (5.9)

Vulnerability 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.

CVSS Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-290

References

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdn

FAQ

What is CVE-2026-52690?

CVE-2026-52690 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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.

How severe is CVE-2026-52690?

CVE-2026-52690 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-52690?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.