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Vulnerabilities

CVE-2025-68151

High
CoreDNS Resource Exhaustion Vulnerability in gRPC, HTTPS, and HTTP/3 Servers
CWE-770 — Weakness Type
Published: Jan 8, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

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.

🤖 AI Executive Summary

CoreDNS versions before 1.14.0 lack resource-limiting controls in gRPC, HTTPS, and HTTP/3 implementations, allowing unauthenticated attackers to exhaust memory and crash the server through excessive concurrent connections or oversized requests. Organizations must upgrade to version 1.14.0 or later to mitigate denial-of-service vulnerabilities.

📄 Description (Arabic)

تفتقر خوادم CoreDNS متعددة التطبيقات (gRPC و HTTPS و HTTP/3) إلى عناصر تحكم حاسمة في تحديد الموارد قبل الإصدار 1.14.0. يمكن للمهاجمين غير المصرح لهم فتح اتصالات متزامنة عديدة أو إرسال أجسام طلبات كبيرة الحجم لاستنزاف الذاكرة وتعطيل الخدمة. يتم حل هذه المشكلة في الإصدار 1.14.0 من خلال فرض حدود الاتصال والتدفق وحجم الرسالة.

🤖 ملخص تنفيذي (AI)

إصدارات CoreDNS السابقة للإصدار 1.14.0 تفتقر إلى عناصر تحكم تحديد الموارد في تطبيقات gRPC و HTTPS و HTTP/3، مما يسمح للمهاجمين غير المصرح لهم باستنزاف الذاكرة وتعطيل الخادم من خلال اتصالات متزامنة مفرطة أو طلبات كبيرة الحجم. يجب على المؤسسات الترقية إلى الإصدار 1.14.0 أو أحدث للتخفيف من ثغرات رفض الخدمة.

🤖 AI Intelligence Analysis Analyzed: May 4, 2026 22:48
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
telecom government banking energy healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.0
/ 10.0
🔧 Remediation Steps (English)
Immediately upgrade CoreDNS to version 1.14.0 or later. Implement network-level rate limiting and connection limits on DNS servers. Deploy DDoS mitigation solutions and monitor for unusual connection patterns. Configure firewall rules to restrict DNS query rates and implement request size validation.
🔧 خطوات المعالجة (العربية)
قم بترقية CoreDNS فوراً إلى الإصدار 1.14.0 أو أحدث. طبق تحديد معدل على مستوى الشبكة وحدود الاتصال على خوادم DNS. نشر حلول التخفيف من هجمات DDoS ومراقبة الأنماط غير العادية للاتصال. قم بتكوين قواعد جدار الحماية لتقييد معدلات استعلامات DNS وتطبيق التحقق من حجم الطلب.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1 5.2 6.1
🔵 SAMA CSF
CC-6.1 CC-6.2 CC-7.2
🟡 ISO 27001:2022
A.12.1.1 A.12.1.2 A.12.6.1
📦 Affected Products / CPE 1 entries
coredns.io:coredns
📊 CVSS Score
7.5
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.5
CWECWE-770
EPSS0.13%
Exploit No
Patch ✓ Yes
Published 2026-01-08
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
8.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
patch-available CWE-770
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