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CVE-2026-42390 Details
Description
An invalid zone might pass ZONEMD validation while it should not. This is only relevant if ZoneToCache is configured with ZONEMD validation.
A vulnerability exists in PowerDNS Recursor that allows an invalid DNS zone to incorrectly pass ZONEMD validation. This issue arises only when ZoneToCache is set to use ZONEMD validation.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 25, 2026Exploitation: NoneAutomatable: —Technical Impact: Partial
CISA-ADP
Assessed Jun 25, 2026Exploitation: NoneAutomatable: YesTechnical Impact: Partial
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html | [email protected] | AdvisoryBroken LinkVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Open-Xchange ZoneToCache | All versions |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 25, 2026 | CVE Modified | CISA-ADP |
| Jun 25, 2026 | New CVE Received | [email protected] |