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Vulnerabilities

CVE-2026-26134

High
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
CWE-190 — Weakness Type
Published: Mar 10, 2026  ·  Modified: Mar 17, 2026  ·  Source: NVD
CVSS v3
7.8
🔗 NVD Official
📄 Description (English)

Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.

🤖 AI Executive Summary

CVE-2026-26134 is a high-severity integer overflow vulnerability in Microsoft Office for Android that allows authenticated attackers to escalate privileges locally. With a CVSS score of 7.8, this vulnerability poses significant risk to organizations relying on mobile Office deployments. Immediate patching is recommended as the vulnerability affects all Android versions of Microsoft Office and requires only local access with valid credentials.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 29, 2026 09:05
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability significantly impacts Saudi organizations across multiple sectors: Banking sector (SAMA-regulated institutions) faces risk to mobile banking applications and internal financial systems; Government agencies (NCA oversight) using Office on mobile devices for classified document handling; Healthcare sector (MOH facilities) managing patient data on mobile platforms; Energy sector (ARAMCO, SEC) with mobile workforce accessing sensitive operational data; Telecommunications (STC, Mobily) managing enterprise communications. The local privilege escalation capability is particularly concerning for BYOD environments prevalent in Saudi enterprises, potentially allowing compromised employee devices to access corporate resources.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare Energy and Utilities Telecommunications Education Retail and E-commerce
⚖️ Saudi Risk Score (AI)
7.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all Microsoft Office Android installations across the organization using MDM/EMM solutions
2. Prioritize patching for devices with access to sensitive data or financial systems
3. Review access logs for suspicious privilege escalation attempts

Patching Guidance:
1. Deploy Microsoft Office updates immediately through Google Play Store or managed app distribution
2. Enable automatic updates for Microsoft Office on all managed Android devices
3. For BYOD programs, mandate Office app updates as a compliance requirement
4. Test patches in staging environment before enterprise-wide rollout

Compensating Controls (if immediate patching delayed):
1. Restrict Microsoft Office app permissions at OS level (disable unnecessary permissions)
2. Implement application-level access controls and monitoring
3. Disable Office on Android for high-risk users until patched
4. Enforce device encryption and PIN/biometric authentication
5. Monitor for suspicious process execution and privilege escalation attempts

Detection Rules:
1. Monitor for unexpected privilege escalation events on Android devices running Office
2. Alert on Office app crashes or abnormal memory access patterns
3. Track unauthorized access to sensitive files post-Office app execution
4. Monitor for Office app attempting to access system-level resources
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات Microsoft Office على Android عبر حلول MDM/EMM
2. إعطاء الأولوية لتصحيح الأجهزة التي تصل إلى البيانات الحساسة أو الأنظمة المالية
3. مراجعة سجلات الوصول للكشف عن محاولات تصعيد امتيازات مريبة

إرشادات التصحيح:
1. نشر تحديثات Microsoft Office فورًا عبر Google Play Store أو توزيع التطبيقات المدارة
2. تفعيل التحديثات التلقائية لـ Microsoft Office على جميع أجهزة Android المدارة
3. لبرامج BYOD، فرض تحديثات تطبيق Office كمتطلب امتثال
4. اختبار التصحيحات في بيئة التجريب قبل النشر على مستوى المؤسسة

الضوابط البديلة (إذا تأخر التصحيح الفوري):
1. تقييد أذونات تطبيق Microsoft Office على مستوى نظام التشغيل
2. تنفيذ ضوابط الوصول على مستوى التطبيق والمراقبة
3. تعطيل Office على Android للمستخدمين عالي الخطورة حتى يتم التصحيح
4. فرض تشفير الجهاز والمصادقة البيومترية
5. مراقبة محاولات تصعيد الامتيازات والتنفيذ غير المتوقع للعمليات

قواعد الكشف:
1. مراقبة أحداث تصعيد الامتيازات غير المتوقعة على أجهزة Android التي تشغل Office
2. تنبيهات على أعطال تطبيق Office أو أنماط وصول الذاكرة غير الطبيعية
3. تتبع الوصول غير المصرح به للملفات الحساسة بعد تنفيذ تطبيق Office
4. مراقبة محاولات تطبيق Office الوصول إلى موارد مستوى النظام
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policies ECC 2024 A.6.1.2 - User Registration and De-registration ECC 2024 A.8.2.1 - Classification of Information ECC 2024 A.12.2.1 - Change Management ECC 2024 A.12.6.1 - Management of Technical Vulnerabilities
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software Inventory SAMA CSF PR.AC-1 - Access Control Policy SAMA CSF PR.PT-2 - Security Patches and Updates SAMA CSF DE.CM-8 - Vulnerability Scanning
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access Control ISO 27001:2022 A.8.1 - Information Security Policies ISO 27001:2022 A.12.6.1 - Management of Technical Vulnerabilities ISO 27001:2022 A.14.2.1 - Secure Development Policy
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security Patches PCI DSS 2.2.4 - Configuration Standards PCI DSS 11.2 - Vulnerability Scanning
📦 Affected Products / CPE 1 entries
microsoft:office
📊 CVSS Score
7.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.8
CWECWE-190
Exploit No
Patch ✓ Yes
Published 2026-03-10
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
7.2
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-190
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