Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2025-21298
CVE-2025-21298:
vulnerability analysis and mitigation
Overview
Windows OLE Remote Code Execution Vulnerability (CVE-2025-21298) is a critical security flaw discovered in January 2025. This vulnerability affects Microsoft Windows Object Linking and Embedding (OLE) technology and has been assigned a CVSSv3 score of 9.8, indicating its severe nature (Tenable Blog, NVD).
Technical details
The vulnerability has been assigned a Critical severity rating with a CVSSv3 Base Score of 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The weakness has been classified under CWE-416 (Use After Free) by Microsoft Corporation (NVD).
Impact
If successfully exploited, this vulnerability allows an attacker to execute remote code on the victim's machine through specially crafted emails. The attack can be triggered either when a victim opens the malicious email using an affected version of Microsoft Outlook or when the email is displayed in the preview pane (CrowdStrike Blog).
Mitigation and workarounds
Microsoft recommends configuring Outlook to read email messages in plain text format instead of rich text format as a mitigation measure. This configuration change prevents the display of content like photos, animations, or specialized fonts that could be used to exploit the vulnerability (CrowdStrike Blog).
Additional resources
Source: This report was generated using AI
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