{"id":75995,"date":"2025-09-19T11:01:53","date_gmt":"2025-09-19T11:01:53","guid":{"rendered":""},"modified":"2025-10-28T23:38:55","modified_gmt":"2025-10-29T05:38:55","slug":"cve-2025-54910-exploiting-heap-based-buffer-overflow-in-microsoft-office","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54910-exploiting-heap-based-buffer-overflow-in-microsoft-office\/","title":{"rendered":"CVE-2025-54910: Exploiting Heap-based Buffer Overflow in Microsoft Office<\/strong>"},"content":{"rendered":"

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

The vulnerability in question, CVE-2025-54910, is a serious security flaw in Microsoft Office that could allow an unauthorized attacker to execute code locally. This vulnerability is particularly dangerous because it affects a wide range of users, given the wide usage of Microsoft Office across various industries worldwide. The potential impact of this vulnerability is significant, as it could lead to system<\/a> compromise or data leakage.<\/p>\n

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

CVE ID: CVE-2025-54910
\nSeverity: High (CVSS 8.4)
\nAttack Vector: Local
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: Unauthorized code execution<\/a>, potential system compromise, and data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Microsoft Office<\/a> | All versions prior to the latest security patch<\/p>\n

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

The vulnerability lies in the way Microsoft Office handles memory<\/a> allocation for certain tasks. By creating a specially crafted document, an attacker can cause a heap-based buffer overflow<\/a> when the document is opened. This overflow can allow the attacker to execute arbitrary code<\/a> in the context of the current user. If the current user is logged on with administrative rights, the attacker could take control of the affected system, leading to system<\/a> compromise or data leakage.<\/p>\n

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

Here is a conceptual example of how the vulnerability might be exploited. This is pseudocode for creating a malicious document:<\/p>\n

Create new Document\nEmbed malicious code into Document properties\nSave Document as .docx<\/code><\/pre>\n
When the document is opened, the malicious code is executed causing a heap-based buffer overflow<\/a>, which could allow further malicious actions.
\nIt is important to note that this is a simplified example. In reality, exploiting this vulnerability would require a deep understanding of memory<\/a> management and the inner workings of Microsoft Office.<\/p>\n
Recommended Mitigations<\/strong><\/p>\n
Microsoft has released a patch that addresses this vulnerability<\/a>. Users are strongly advised to update their Microsoft Office<\/a> to the latest version. If the patch cannot be applied immediately, users can consider using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and prevent attempts to exploit this vulnerability<\/a>. These are temporary mitigations and the patch should be applied as soon as possible.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The vulnerability in question, CVE-2025-54910, is a serious security flaw in Microsoft Office that could allow an unauthorized attacker to execute code locally. This vulnerability is particularly dangerous because it affects a wide range of users, given the wide usage of Microsoft Office across various industries worldwide. The potential impact of this vulnerability is […]<\/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":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-75995","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft","attack_vector-buffer-overflow"],"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