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Vulnerabilities

CVE-2026-22026

High ⚡ Exploit Available
NASA CryptoLib KMC Client Unbounded Memory Allocation Vulnerability (CVE-2026-22026)
CWE-789 — Weakness Type
Published: Jan 10, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. Prior to version 1.4.3, the libcurl write_callback function in the KMC crypto service client allows unbounded memory growth by reallocating response buffers without any size limit or overflow check. A malicious KMC server can return arbitrarily large HTTP responses, forcing the client to allocate excessive memory until the process is terminated by the OS. This issue has been patched in version 1.4.3.

🤖 AI Executive Summary

NASA CryptoLib versions prior to 1.4.3 contain a critical memory exhaustion vulnerability in the KMC crypto service client. The libcurl write_callback function lacks size limits, allowing malicious KMC servers to force unbounded memory allocation through oversized HTTP responses, leading to denial of service. Exploitation code exists and patches are available in version 1.4.3.

📄 Description (Arabic)

تؤثر هذه الثغرة على مكتبة CryptoLib التي توفر حلاً برمجياً لتأمين الاتصالات بين المركبات الفضائية ومحطات الأرض باستخدام بروتوكول CCSDS SDLS-EP. الخلل يكمن في دالة write_callback الخاصة بمكتبة libcurl في عميل خدمة التشفير KMC، حيث تقوم بإعادة تخصيص مخازن الاستجابة دون أي فحص لحدود الحجم أو تجاوز السعة. يمكن لخادم KMC خبيث إرسال استجابات HTTP ضخمة تجبر العميل على تخصيص ذاكرة مفرطة حتى ينهي نظام التشغيل العملية. تم تصنيف الثغرة بدرجة خطورة 7.5 وتصنف ضمن CWE-789 المتعلق بتخصيص الذاكرة غير المحكوم.

🤖 ملخص تنفيذي (AI)

تحتوي إصدارات مكتبة NASA CryptoLib الأقدم من 1.4.3 على ثغرة حرجة في استنزاف الذاكرة ضمن عميل خدمة التشفير KMC. تفتقر دالة write_callback في libcurl إلى حدود الحجم، مما يسمح لخوادم KMC الضارة بفرض تخصيص ذاكرة غير محدود عبر استجابات HTTP كبيرة الحجم، مما يؤدي إلى رفض الخدمة. يوجد كود استغلال وتتوفر تصحيحات في الإصدار 1.4.3.

🤖 AI Intelligence Analysis Analyzed: Feb 28, 2026 08:11
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations utilizing NASA CryptoLib for secure satellite communications or aerospace applications face denial-of-service risks. Critical infrastructure sectors including space programs, defense communications, and research institutions using cFS-based systems are vulnerable to memory exhaustion attacks that can disrupt mission-critical operations and compromise communication availability.
🏢 Affected Saudi Sectors
الفضاء والطيران الدفاع والأمن الوطني البحث العلمي والتطوير الاتصالات الفضائية البنية التحتية الحيوية
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.0
/ 10.0
🔧 Remediation Steps (English)
1. Immediately upgrade NASA CryptoLib to version 1.4.3 or later which includes proper memory allocation bounds checking and overflow protection in the libcurl write_callback function
2. Implement network segmentation and access controls to restrict KMC server communications to trusted endpoints only, and deploy intrusion detection systems to monitor for abnormal HTTP response sizes
3. Establish memory usage monitoring and alerting for processes using CryptoLib, configure OS-level resource limits (ulimit) to prevent complete system exhaustion, and conduct security assessments of all cFS-based satellite communication systems
🔧 خطوات المعالجة (العربية)
1. الترقية الفورية لمكتبة NASA CryptoLib إلى الإصدار 1.4.3 أو أحدث والذي يتضمن فحصاً صحيحاً لحدود تخصيص الذاكرة وحماية من تجاوز السعة في دالة write_callback الخاصة بـ libcurl
2. تطبيق تجزئة الشبكة وضوابط الوصول لتقييد اتصالات خادم KMC بالنقاط الموثوقة فقط، ونشر أنظمة كشف التسلل لمراقبة أحجام استجابات HTTP غير الطبيعية
3. إنشاء مراقبة وتنبيهات لاستخدام الذاكرة للعمليات التي تستخدم CryptoLib، وتكوين حدود الموارد على مستوى نظام التشغيل (ulimit) لمنع الاستنزاف الكامل للنظام، وإجراء تقييمات أمنية لجميع أنظمة الاتصالات الفضائية المبنية على cFS
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-2 (Vulnerability Management) ECC-3-1 (System Hardening) ECC-4-1 (Network Security) ECC-5-2 (Availability Management)
🔵 SAMA CSF
CCC-1.1.1 (Cybersecurity Policy) CCC-4.2.1 (Vulnerability Assessment) CCC-5.1.1 (Patch Management) CCC-6.3.1 (Network Segmentation)
🟡 ISO 27001:2022
A.12.6.1 (Management of Technical Vulnerabilities) A.14.2.5 (Secure System Engineering Principles) A.17.2.1 (Availability of Information Processing Facilities)
📦 Affected Products / CPE 1 entries
nasa:cryptolib
📊 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-789
EPSS0.07%
Exploit ✓ Yes
Patch ✓ Yes
Published 2026-01-10
Source Feed nvd
Views 2
🇸🇦 Saudi Risk Score
8.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
exploit-available patch-available CWE-789
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