{"id":64130,"date":"2025-08-17T22:42:07","date_gmt":"2025-08-17T22:42:07","guid":{"rendered":""},"modified":"2025-10-03T12:33:03","modified_gmt":"2025-10-03T18:33:03","slug":"cve-2025-48806-microsoft-mpeg-2-video-extension-use-after-free-vulnerability","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-48806-microsoft-mpeg-2-video-extension-use-after-free-vulnerability\/","title":{"rendered":"CVE-2025-48806: Microsoft MPEG-2 Video Extension Use-After-Free Vulnerability<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The Common Vulnerabilities and Exposures (CVE) system has identified a significant flaw in the Microsoft MPEG-2 Video Extension. This vulnerability, known as CVE-2025-48806, poses a serious threat to system integrity and data security by allowing an authorized attacker to execute code locally. Given the ubiquitous usage of Microsoft products across the globe, this vulnerability has the potential to affect a vast number<\/a> of systems, underscoring the urgency for appropriate mitigation measures.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-48806
\nSeverity: High (CVSS score: 7.8)
\nAttack Vector: Local
\nPrivileges Required: Low
\nUser Interaction: Required
\nImpact: Potential system<\/a> compromise and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Microsoft MPEG-2 Video Extension | All versions prior<\/a> to patch<\/p>\n

How the Exploit Works<\/strong><\/p>\n

This vulnerability stems from a use-after-free condition, a type of memory corruption<\/a> error that occurs when a program continues to use a pointer after it has been freed. In the case of CVE-2025-48806, the Microsoft MPEG-2 Video Extension doesn’t correctly handle memory<\/a> objects, allowing an attacker to manipulate the application’s memory and execute arbitrary code.
\nThe exploitation process typically involves the attacker triggering a condition in which the application frees a memory<\/a> object but does not nullify the pointer to it. The attacker then reallocates this memory, placing their malicious code<\/a> inside. When the application references the stale pointer, it ends up executing the attacker’s code<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Although the specific details of this exploit are proprietary, the following pseudocode provides a rough idea of how this vulnerability might be exploited:<\/p>\n

\/\/ Allocate memory for object\nobject* obj = malloc(sizeof(object));\n\/\/ Use the object\nuse(obj);\n\/\/ Free the object\nfree(obj);\n\/\/ Malicious attacker reallocates the memory\nobject* malicious_obj = malloc(sizeof(object));\nmalicious_obj->code = malicious_code;\n\/\/ Application uses the stale pointer, executing the malicious code\nuse(obj);<\/code><\/pre>\n
In this example, `use(obj);` represents a point in the application’s code where the freed memory<\/a> is erroneously accessed. The `malicious_obj->code = malicious_code;` line indicates where the attacker inserts their malicious code into the reallocated memory<\/a>.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users and administrators are advised to apply the vendor-released patch as soon as possible to mitigate this vulnerability<\/a>. If immediate patching is not feasible, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary protection by monitoring and potentially blocking malicious activity. However, these measures do not rectify the underlying vulnerability and should only be considered as stopgap solutions<\/a> until the patch can be applied.
\nRegularly updating and patching software is a best practice in cybersecurity<\/a>, and this case serves as a reminder of the importance of such measures. Users are also encouraged to follow the principle of least privilege, limiting the potential attack surface and reducing the risk of exploitation<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The Common Vulnerabilities and Exposures (CVE) system has identified a significant flaw in the Microsoft MPEG-2 Video Extension. This vulnerability, known as CVE-2025-48806, poses a serious threat to system integrity and data security by allowing an authorized attacker to execute code locally. Given the ubiquitous usage of Microsoft products across the globe, this vulnerability […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[82],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64130","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t