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Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 4h Global malware Technology and Cloud Services HIGH 4h Global general Financial Services and E-commerce MEDIUM 4h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 5h Global phishing Technology and Consumer Services HIGH 5h Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 4h Global malware Technology and Cloud Services HIGH 4h Global general Financial Services and E-commerce MEDIUM 4h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 5h Global phishing Technology and Consumer Services HIGH 5h Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 4h Global malware Technology and Cloud Services HIGH 4h Global general Financial Services and E-commerce MEDIUM 4h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 5h Global phishing Technology and Consumer Services HIGH 5h
Vulnerabilities

CVE-2025-53770

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Microsoft SharePoint Deserialization of Untrusted Data Remote Code Execution
Published: Jul 20, 2025  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Microsoft SharePoint Deserialization of Untrusted Data Vulnerability — Microsoft SharePoint Server on-premises contains a deserialization of untrusted data vulnerability that could allow an unauthorized attacker to execute code over a network. This vulnerability could be chained with CVE-2025-53771. CVE-2025-53770 is a patch bypass for CVE-2025-49704, and the updates for CVE-2025-53770 include more robust protection than those for CVE-2025-49704.

🤖 AI Executive Summary

Microsoft SharePoint Server on-premises contains a critical deserialization vulnerability allowing remote code execution through untrusted data processing. This vulnerability bypasses previous patches and can be chained with CVE-2025-53771 for enhanced attack impact.

📄 Description (Arabic)

تحتوي هذه الثغرة على آلية فك تسلسل غير آمنة في Microsoft SharePoint Server المحلي تسمح للمهاجمين بتنفيذ أكواد عشوائية عبر الشبكة. تمثل هذه الثغرة تجاوزاً لإصلاحات سابقة وتتطلب تحديثات أكثر قوة من الإصلاحات السابقة.

🤖 ملخص تنفيذي (AI)

خادم Microsoft SharePoint المحلي يحتوي على ثغرة حرجة في فك تسلسل البيانات غير الموثوقة تسمح بتنفيذ الأكواد عن بعد. يمكن ربط هذه الثغرة مع CVE-2025-53771 لزيادة تأثير الهجوم.

🤖 AI Intelligence Analysis Analyzed: Apr 16, 2026 22:32
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
government banking telecom healthcare energy
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
Immediately apply Microsoft security updates for CVE-2025-53770 to all SharePoint Server on-premises installations. Verify patches address the deserialization vulnerability and provide protection beyond CVE-2025-49704 fixes. Implement network segmentation to restrict SharePoint access, disable unnecessary deserialization features, monitor for exploitation attempts, and conduct security assessments post-patching.
🔧 خطوات المعالجة (العربية)
طبق تحديثات أمان Microsoft لـ CVE-2025-53770 فوراً على جميع تثبيتات SharePoint Server المحلية. تحقق من أن التصحيحات تعالج ثغرة فك التسلسل وتوفر حماية أقوى من إصلاحات CVE-2025-49704. طبق تقسيم الشبكة لتقييد الوصول إلى SharePoint وعطل ميزات فك التسلسل غير الضرورية ومراقبة محاولات الاستغلال.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.7.1.1 A.7.1.2 A.12.6.1 A.14.2.1
🔵 SAMA CSF
ID.BE-1 PR.AC-1 PR.PT-1 DE.CM-1 RS.MI-2
🟡 ISO 27001:2022
27001:A.12.2.1 27001:A.12.6.1 27001:A.14.2.1 27001:A.14.2.5
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:SharePoint
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS90.95%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2025-07-21
Published 2025-07-20
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.0
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited ransomware
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