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TI-2025-21528 Aliases CVE-2025-30192GHSA-ph6c-ph44-jm63

A Recursor configured to send out ECS enabled queries can be sensitive to spoofing attempts

Priority LOW 39CWE-345Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-345.

Summary

An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries. The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers. The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00272 19th percentileScored 2026-11-07
Fix Fixed Recursor (PowerDNS): 5.0.12, 5.1.6, 5.2.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PowerDNSRecursor—5.0.12, 5.1.6, 5.2.4Patch availableCNA
  • Recursor VendorPowerDNS Affected — Fixed in 5.0.12, 5.1.6, 5.2.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*——PowerDNS
  • cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* Versions — — ·PowerDNS

Remediation

  • Fix · CNA Recursor (PowerDNS) Fixed in 5.0.12, 5.1.6, 5.2.4

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-30192
  2. 2026-10-03 Alias added: GHSA-ph6c-ph44-jm63

References

Other 1

  • TI-2023-27571 Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related… CVSS 3.1HIGH 7.5
  • TI-2023-27773 The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance… CVSS 3.1HIGH 7.5
  • TI-2015-01678 The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x before 3.6.3, and… CVSS 2.0HIGH 7.8
  • TI-2021-14878 PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by… CVSS 3.1HIGH 7.5
  • TI-2016-04703 PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . CVSS 3.0HIGH 7.5
  • TI-2018-12065 Out-of-bounds read in [UNKNOWN] pdns-recursor CVSS 3.0HIGH 7.5
See all 130 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences