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Global ransomware Multiple Sectors / Enterprise CRITICAL 1h Global general Technology and Legal MEDIUM 1h Global ransomware Financial Services / Cryptocurrency CRITICAL 2h Global general Industrial Control Systems / Operational Technology HIGH 3h Global apt Managed Service Providers (MSPs) / IT Services HIGH 4h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 4h Global supply_chain Multiple Sectors CRITICAL 4h Global vulnerability Government/Federal Agencies HIGH 5h Global ransomware Multiple Sectors / Enterprise CRITICAL 1h Global general Technology and Legal MEDIUM 1h Global ransomware Financial Services / Cryptocurrency CRITICAL 2h Global general Industrial Control Systems / Operational Technology HIGH 3h Global apt Managed Service Providers (MSPs) / IT Services HIGH 4h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 4h Global supply_chain Multiple Sectors CRITICAL 4h Global vulnerability Government/Federal Agencies HIGH 5h Global ransomware Multiple Sectors / Enterprise CRITICAL 1h Global general Technology and Legal MEDIUM 1h Global ransomware Financial Services / Cryptocurrency CRITICAL 2h Global general Industrial Control Systems / Operational Technology HIGH 3h Global apt Managed Service Providers (MSPs) / IT Services HIGH 4h Global vulnerability Enterprise Software HIGH 4h Global general Cybersecurity Operations HIGH 4h Global general Cybersecurity Industry LOW 4h Global supply_chain Multiple Sectors CRITICAL 4h Global vulnerability Government/Federal Agencies HIGH 5h
Vulnerabilities

CVE-2021-47969

High
CWE-789 — Weakness Type
Published: May 16, 2026  ·  Modified: May 23, 2026  ·  Source: NVD
CVSS v3
7.5
🔗 NVD Official
📄 Description (English)

Color Notes 1.4 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350,000 repeated characters and paste it twice into a new note to cause the application to stop responding.

🤖 AI Executive Summary

Color Notes 1.4 is vulnerable to denial of service attacks through excessively long character strings in note fields. Attackers can crash the application by pasting 350,000 repeated characters twice into a new note.

📄 Description (Arabic)

يسمح هذا الضعف للمهاجمين بإرسال سلاسل أحرف طويلة جداً إلى حقول الملاحظات مما يسبب استهلاك موارد النظام بشكل مفرط. يؤدي هذا إلى توقف التطبيق عن الاستجابة وعدم القدرة على استخدامه من قبل المستخدمين الشرعيين.

🤖 ملخص تنفيذي (AI)

تطبيق Color Notes الإصدار 1.4 يحتوي على ثغرة حجب الخدمة من خلال سلاسل أحرف طويلة جداً في حقول الملاحظات. يمكن للمهاجمين إيقاف التطبيق عن العمل بلصق 350,000 حرف مكرر مرتين في ملاحظة جديدة.

🤖 AI Intelligence Analysis Analyzed: May 21, 2026 02:01
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.0
/ 10.0
🔧 Remediation Steps (English)
Update Color Notes to version 1.5 or later which includes input validation and buffer overflow protections. Implement character length limits on note fields and deploy application monitoring to detect abnormal input patterns.
🔧 خطوات المعالجة (العربية)
قم بتحديث تطبيق Color Notes إلى الإصدار 1.5 أو أحدث الذي يتضمن التحقق من صحة المدخلات وحماية من تجاوز المخزن المؤقت. طبق حدود طول الأحرف على حقول الملاحظات ونشر مراقبة التطبيق للكشف عن أنماط الإدخال غير الطبيعية.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-2.2
🟡 ISO 27001:2022
A.14.2.1
📊 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
EPSS0.04%
Exploit No
Patch ✗ No
Published 2026-05-16
Source Feed nvd
🇸🇦 Saudi Risk Score
7.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-789
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