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Vulnerabilities

CVE-2026-33112

High
CWE-502 — Weakness Type
Published: May 12, 2026  ·  Modified: May 19, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

🤖 AI Executive Summary

CVE-2026-33112 is a high-severity deserialization vulnerability in Microsoft Office SharePoint that allows authorized attackers to execute arbitrary code remotely. The vulnerability affects SharePoint's handling of untrusted serialized data, enabling code execution with CVSS score of 8.8.

📄 Description (Arabic)

تتعلق هذه الثغرة بمعالجة Microsoft SharePoint غير الآمنة للبيانات المسلسلة من مصادر غير موثوقة. يمكن للمهاجمين المصرحين استغلال هذه الثغرة لتنفيذ كود عشوائي على خوادم SharePoint. تؤثر الثغرة على سرية وتوفر البيانات المخزنة في SharePoint.

🤖 ملخص تنفيذي (AI)

CVE-2026-33112 هي ثغرة عالية الخطورة في Microsoft Office SharePoint تسمح للمهاجمين المصرحين بتنفيذ كود عشوائي عن بعد. تؤثر الثغرة على معالجة SharePoint للبيانات المسلسلة غير الموثوقة، مما يتيح تنفيذ الكود برقم CVSS 8.8.

🤖 AI Intelligence Analysis Analyzed: May 15, 2026 19:34
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
government banking telecom energy healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.0
/ 10.0
🔧 Remediation Steps (English)
Apply Microsoft security patches immediately. Update SharePoint to the latest patched version. Restrict network access to SharePoint servers using firewalls. Implement strict input validation and disable dangerous deserialization features. Monitor SharePoint logs for suspicious deserialization activities. Conduct security assessments of SharePoint deployments.
🔧 خطوات المعالجة (العربية)
طبق تصحيحات الأمان من Microsoft فوراً. حدّث SharePoint إلى أحدث إصدار مصحح. قيّد الوصول إلى خوادم SharePoint باستخدام جدران الحماية. طبق التحقق الصارم من المدخلات وعطّل ميزات فك التسلسل الخطيرة. راقب سجلات SharePoint للأنشطة المريبة. أجرِ تقييمات أمان لنشرات SharePoint.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1 5.2 5.3 6.1 6.2
🔵 SAMA CSF
ID.BE-1 PR.DS-1 PR.DS-6 DE.CM-1
🟡 ISO 27001:2022
A.12.6.1 A.14.2.1 A.14.2.5
📦 Affected Products / CPE 3 entries
microsoft:sharepoint_server
microsoft:sharepoint_server:2016
microsoft:sharepoint_server:2019
📊 CVSS Score
8.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorN — None / Network
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 Score8.8
CWECWE-502
EPSS0.62%
Exploit No
Patch ✗ No
Published 2026-05-12
Source Feed nvd
🇸🇦 Saudi Risk Score
8.0
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-502
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