CVE-2023-26437

Deterred spoofing attempts can lead to authoritative servers being marked unavailable

Published Apr 4, 2023 CVSS 3.1 · 3.4 Low EPSS < 1% KEV · Not listed
Description
Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.

Remediation

Vendor Solution

Upgrade to PowerDNS Recursor 4.6.6, 4.7.5 or 4.8.4.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2023-30257 Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.
History
Type Values Removed Values Added
Weaknesses CWE-400
Metrics ssvc

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

Type Values Removed Values Added
Description Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3. Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.
Weaknesses

Sources

Status
PUBLISHED
Assigner
OX
Published
Updated
Feb 13, 2025, 4:44 PM
Reserved
Feb 22, 2023, 8:42 PM
Status
Modified
Published
Apr 4, 2023, 3:15 PM
Modified
Jun 17, 2026, 5:43 AM