What is CVE-2025-59023?

CVE-2025-59023 is a high-severity vulnerability in Powerdns Recursor, classified under Authentication Bypass by Capture-replay. CVSS score: 8.2/10. Published 2026-02-09.

How severe is CVE-2025-59023?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Powerdns Recursor

CVE-2025-59023

Crafted delegations or IP fragments can poison cached delegations in Recursor.

EPSS: 0.003 (18.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L.

Affected products

Powerdns Recursor — versions 5.3.0, 5.2.0, 5.1.0

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

security@open-xchange.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-59023?: CVE-2025-59023 is a high-severity vulnerability in Powerdns Recursor, classified under Authentication Bypass by Capture-replay. CVSS score: 8.2/10. Published 2026-02-09.
How severe is CVE-2025-59023?: High severity. CVSS v3 base score is 8.2 out of 10.