CVE-2025-68151

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.0, multiple CoreDNS server implementations (gRPC, HTTPS, and HTTP/3) lack critical resource-limiting controls. An unauthenticated remote attacker can exhaust memory and degrade or crash the server by opening many concurrent connections, streams, or sending oversized request bodies. The issue is similar in nature to CVE-2025-47950 (QUIC DoS) but affects additional server types that do not enforce connection limits, stream limits, or message size constraints. Version 1.14.0 contains a patch.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/coredns/coredns/commit/0d8cbb1a6bcb6bc9c1a489865278b8725fa20812	Patch
https://github.com/coredns/coredns/pull/7490	Issue Tracking Patch
https://github.com/coredns/coredns/security/advisories/GHSA-527x-5wrf-22m2	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:coredns.io:coredns:*:*:*:*:*:*:*:*

History

14 Oct 2026, 16:10

Type	Values Removed	Values Added
Summary		(es) CoreDNS es un servidor DNS que encadena plugins. Antes de la versión 1.14.0, múltiples implementaciones del servidor CoreDNS (gRPC, HTTPS y HTTP/3) carecen de controles críticos de limitación de recursos. Un atacante remoto no autenticado puede agotar la memoria y degradar o bloquear el servidor al abrir muchas conexiones concurrentes, flujos o enviar cuerpos de solicitud de tamaño excesivo. El problema es similar en naturaleza a CVE-2025-47950 (DoS de QUIC) pero afecta a tipos de servidor adicionales que no aplican límites de conexión, límites de flujo o restricciones de tamaño de mensaje. La versión 1.14.0 contiene un parche.

Information

Published : 2026-01-08 16:15

Updated : 2026-10-14 16:10

NVD link : CVE-2025-68151

Mitre link : CVE-2025-68151

CVE.ORG link : CVE-2025-68151

JSON object : View

Products Affected

coredns.io

coredns

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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