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Vulnerabilities

CVE-2026-1679

High ⚡ Exploit Available
The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit
CWE-120 — Weakness Type
Published: Mar 28, 2026  ·  Modified: Apr 3, 2026  ·  Source: NVD
CVSS v3
7.3
🔗 NVD Official
📄 Description (English)

The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit requires local code that can call the socket send API; no remote attacker can reach it directly.

🤖 AI Executive Summary

CVE-2026-1679 is a local buffer overflow vulnerability in the Zephyr RTOS eswifi socket offload driver that allows authenticated local attackers to corrupt kernel memory through oversized socket send operations. With a CVSS score of 7.3 and publicly available exploits, this poses a significant risk to IoT and embedded systems deployed in Saudi critical infrastructure. Immediate patching is required for all affected Zephyr deployments, particularly those in industrial control and smart grid environments.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 5, 2026 12:01
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily affects Saudi organizations deploying Zephyr RTOS in IoT and embedded systems, particularly: (1) Energy sector (ARAMCO, SEC) — smart grid controllers, SCADA systems, and industrial IoT devices; (2) Telecommunications (STC, Mobily) — network infrastructure and IoT management systems; (3) Government agencies (NCA, NCSC) — critical infrastructure monitoring and control systems; (4) Healthcare — medical IoT devices and monitoring systems; (5) Smart city initiatives — traffic management, utilities, and building automation. Local privilege escalation could lead to complete system compromise, data exfiltration, and disruption of critical services.
🏢 Affected Saudi Sectors
Energy (ARAMCO, SEC) Telecommunications (STC, Mobily) Government (NCA, NCSC) Healthcare Smart City Infrastructure Industrial Control Systems IoT and Embedded Systems
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Zephyr RTOS deployments in your organization, particularly in production IoT and embedded systems
2. Assess which systems are running vulnerable versions (all versions prior to the patched release)
3. Restrict local access to affected systems and implement strict authentication controls
4. Monitor for suspicious socket send operations and kernel memory corruption indicators

PATCHING GUIDANCE:
1. Apply the latest Zephyr RTOS security patch immediately to all affected systems
2. Prioritize patching for systems in critical infrastructure (energy, telecom, government)
3. Test patches in non-production environments before deployment
4. Implement a staged rollout plan for production systems to minimize downtime

COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement strict local access controls and disable unnecessary user accounts
2. Use SELinux or AppArmor to restrict socket operations and memory access
3. Deploy kernel address space layout randomization (KASLR) to mitigate exploitation
4. Implement system call filtering to restrict send() operations to authorized processes
5. Monitor system logs for buffer overflow attempts and kernel panics

DETECTION RULES:
1. Monitor for socket send() calls with buffer sizes exceeding eswifi->buf capacity
2. Alert on kernel memory corruption indicators (kernel panics, segmentation faults)
3. Track failed send operations followed by system instability
4. Monitor for unusual process behavior after socket operations
5. Implement kernel module integrity checking to detect memory corruption
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع نشرات Zephyr RTOS في مؤسستك، خاصة في أنظمة إنترنت الأشياء والأنظمة المدمجة الإنتاجية
2. قيّم الأنظمة التي تعمل بإصدارات معرضة للخطر (جميع الإصدارات السابقة للإصدار المصحح)
3. قيّد الوصول المحلي للأنظمة المتأثرة وطبّق عناصر تحكم مصادقة صارمة
4. راقب عمليات إرسال المقبس المريبة ومؤشرات تلف ذاكرة النواة

إرشادات التصحيح:
1. طبّق أحدث تصحيح أمان Zephyr RTOS فوراً على جميع الأنظمة المتأثرة
2. أعطِ الأولوية لتصحيح الأنظمة في البنية التحتية الحرجة (الطاقة والاتصالات والحكومة)
3. اختبر التصحيحات في بيئات غير الإنتاج قبل النشر
4. طبّق خطة نشر مرحلية للأنظمة الإنتاجية لتقليل وقت التوقف

عناصر التحكم التعويضية (إذا لم يكن التصحيح الفوري ممكناً):
1. طبّق عناصر تحكم وصول محلية صارمة وعطّل حسابات المستخدمين غير الضرورية
2. استخدم SELinux أو AppArmor لتقييد عمليات المقبس والوصول إلى الذاكرة
3. طبّق عشوائية تخطيط مساحة عنوان النواة (KASLR) للتخفيف من الاستغلال
4. طبّق تصفية استدعاءات النظام لتقييد عمليات send() على العمليات المصرح بها
5. راقب سجلات النظام لمحاولات تجاوز المخزن المؤقت وأعطال النواة

قواعد الكشف:
1. راقب استدعاءات socket send() بأحجام مخزن مؤقت تتجاوز سعة eswifi->buf
2. أصدر تنبيهات على مؤشرات تلف ذاكرة النواة (أعطال النواة، أخطاء التقسيم)
3. تتبع عمليات الإرسال الفاشلة متبوعة بعدم استقرار النظام
4. راقب السلوك غير المعتاد للعملية بعد عمليات المقبس
5. طبّق فحص سلامة وحدة النواة للكشف عن تلف الذاكرة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 — Management of technical vulnerabilities ECC 2024 A.14.2.1 — Secure development policy ECC 2024 A.12.2.1 — Monitoring of system use ECC 2024 A.12.4.1 — Event logging
🔵 SAMA CSF
ID.RA-1 — Asset management and vulnerability identification PR.IP-12 — System development and maintenance DE.CM-1 — System monitoring and anomaly detection RS.MI-2 — Incident response and containment
🟡 ISO 27001:2022
A.12.2.1 — Monitoring of information systems A.12.6.1 — Management of technical vulnerabilities A.14.2.1 — Secure development policy and procedures A.14.2.5 — Secure development environment
🟣 PCI DSS v4.0.1
Requirement 6.2 — Security patches and updates Requirement 11.2 — Vulnerability scanning
📦 Affected Products / CPE 1 entries
zephyrproject:zephyr
📊 CVSS Score
7.3
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityL — Low / Local
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.3
CWECWE-120
EPSS0.05%
Exploit ✓ Yes
Patch ✓ Yes
Published 2026-03-28
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available patch-available CWE-120
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