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Global phishing Multiple sectors HIGH 1h Global insider Cybersecurity Services CRITICAL 1h Global ransomware Multiple sectors (U.S. companies) CRITICAL 1h Global malware Financial Services, Cryptocurrency CRITICAL 2h Global malware Technology and Cloud Services HIGH 2h Global general Financial Services and E-commerce MEDIUM 2h Global data_breach Social Media and Communications CRITICAL 2h Global general Cybersecurity Operations HIGH 3h Global phishing Technology and Consumer Services HIGH 3h Global data_breach Multiple sectors HIGH 3h Global phishing Multiple sectors HIGH 1h Global insider Cybersecurity Services CRITICAL 1h Global ransomware Multiple sectors (U.S. companies) CRITICAL 1h Global malware Financial Services, Cryptocurrency CRITICAL 2h Global malware Technology and Cloud Services HIGH 2h Global general Financial Services and E-commerce MEDIUM 2h Global data_breach Social Media and Communications CRITICAL 2h Global general Cybersecurity Operations HIGH 3h Global phishing Technology and Consumer Services HIGH 3h Global data_breach Multiple sectors HIGH 3h Global phishing Multiple sectors HIGH 1h Global insider Cybersecurity Services CRITICAL 1h Global ransomware Multiple sectors (U.S. companies) CRITICAL 1h Global malware Financial Services, Cryptocurrency CRITICAL 2h Global malware Technology and Cloud Services HIGH 2h Global general Financial Services and E-commerce MEDIUM 2h Global data_breach Social Media and Communications CRITICAL 2h Global general Cybersecurity Operations HIGH 3h Global phishing Technology and Consumer Services HIGH 3h Global data_breach Multiple sectors HIGH 3h
Vulnerabilities

CVE-2026-5673

Medium
CWE-125 — Weakness Type
Published: Apr 6, 2026  ·  Modified: Apr 9, 2026  ·  Source: NVD
CVSS v3
5.6
🔗 NVD Official
📄 Description (English)

A flaw was found in libtheora. This heap-based out-of-bounds read vulnerability exists within the AVI (Audio Video Interleave) parser, specifically in the avi_parse_input_file() function. A local attacker could exploit this by tricking a user into opening a specially crafted AVI file containing a truncated header sub-chunk. This could lead to a denial-of-service (application crash) or potentially leak sensitive information from the heap.

🤖 AI Executive Summary

CVE-2026-5673 is a heap-based out-of-bounds read vulnerability in libtheora's AVI parser that can be triggered by opening a malicious AVI file with a truncated header. The vulnerability may cause application crashes or leak sensitive heap information.

📄 Description (Arabic)

يوجد ثغرة قراءة خارج الحدود في الذاكرة المكومة في مكتبة libtheora ضمن محلل ملفات AVI، تحديداً في دالة avi_parse_input_file(). يمكن لمهاجم محلي استغلال هذه الثغرة بخداع المستخدم لفتح ملف AVI مصنوع خصيصاً يحتوي على رأس فرعي مقطوع.

🤖 ملخص تنفيذي (AI)

CVE-2026-5673 is a heap-based out-of-bounds read vulnerability in libtheora's AVI parser that can be triggered by opening a malicious AVI file with a truncated header. The vulnerability may cause application crashes or leak sensitive heap information.

🤖 AI Intelligence Analysis Analyzed: Apr 7, 2026 00:21
🇸🇦 Saudi Arabia Impact Assessment
Relevance: medium
🏢 Affected Saudi Sectors
Media and Entertainment Broadcasting Video Processing Software Development Government IT Services
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.0
/ 10.0
🔧 Remediation Steps (English)
Update libtheora to the latest patched version. Validate and sanitize AVI file headers before processing. Implement strict bounds checking in the avi_parse_input_file() function. Restrict file opening permissions and educate users about opening untrusted AVI files. Monitor system logs for abnormal application crashes.
🔧 خطوات المعالجة (العربية)
قم بتحديث مكتبة libtheora إلى أحدث إصدار مصحح. تحقق من صحة رؤوس ملفات AVI وتنظيفها قبل المعالجة. طبق فحص الحدود الصارم في دالة avi_parse_input_file(). قيد صلاحيات فتح الملفات وثقف المستخدمين حول فتح ملفات AVI غير الموثوقة. راقب سجلات النظام للتحقق من أعطال التطبيقات غير الطبيعية.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1 5.2 6.1 6.2
🔵 SAMA CSF
ID-2 ID-3 PO-2.1 PO-2.2
🟡 ISO 27001:2022
A.12.2.1 A.12.6.1 A.14.1.1 A.14.2.1
📊 CVSS Score
5.6
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionR — Required
ScopeU — Unchanged
ConfidentialityL — Low / Local
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity Medium
CVSS Score5.6
CWECWE-125
EPSS0.01%
Exploit No
Patch ✗ No
Published 2026-04-06
Source Feed nvd
Views 2
🇸🇦 Saudi Risk Score
5.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-125
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