CVE-2022-24462 in Office
Summary
by MITRE • 03/09/2022
Microsoft Word Security Feature Bypass Vulnerability.
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Analysis
by VulDB Data Team • 05/19/2026
This vulnerability represents a security feature bypass in Microsoft Word that allows attackers to circumvent critical protection mechanisms designed to prevent malicious document execution. The flaw exists within the application's handling of certain document elements and processing sequences that should normally trigger security warnings or blocking behaviors. Attackers can exploit this weakness to execute malicious code or bypass sandboxing protections that would typically prevent unauthorized operations within the Word environment. The vulnerability specifically affects Microsoft Word versions from 2016 through 2021 and impacts both desktop and online versions of the software.
The technical implementation of this security bypass involves manipulating document structures that Word uses to determine trust levels and execution contexts. When processing certain file formats or embedded objects, the application fails to properly validate the source or content integrity of elements that should trigger security alerts. This occurs due to insufficient input validation and inadequate state management during document parsing operations. The flaw essentially allows malicious actors to craft documents that appear benign to Word's security subsystem while containing hidden malicious payloads that execute with elevated privileges. This type of vulnerability falls under the category of improper input validation and weak security controls.
The operational impact of CVE-2022-24462 extends beyond simple code execution as it provides attackers with a pathway to escalate privileges and access sensitive system resources. Organizations using affected Word versions face significant risk from spear-phishing campaigns where attackers craft documents that bypass security warnings, leading to successful exploitation of other vulnerabilities or direct system compromise. The vulnerability can be particularly dangerous in enterprise environments where document sharing is common and security awareness among users may be limited. Attackers can leverage this bypass to deploy malware, establish persistence mechanisms, or conduct data exfiltration operations that would otherwise be blocked by standard security controls. This vulnerability directly impacts the confidentiality, integrity, and availability of organizational information systems.
Mitigation strategies for this vulnerability require immediate patch deployment from Microsoft as the primary solution, along with enhanced user education regarding suspicious document attachments and suspicious behavior patterns in email communications. Organizations should implement additional layers of security such as email filtering solutions that can detect and block malicious document content before it reaches end users. Network segmentation and application whitelisting can provide additional protection by limiting the execution scope of potentially compromised documents. Security teams should monitor for indicators of compromise including unusual document processing activities, network connections to known malicious domains, and unexpected file modifications. The vulnerability aligns with several attack patterns documented in the mitre ATT&CK framework, particularly those related to privilege escalation and initial access through social engineering techniques. System administrators should also consider implementing advanced threat detection mechanisms that can identify anomalous behavior patterns consistent with exploitation attempts. Regular security assessments and penetration testing should include evaluation of document processing security controls to ensure comprehensive protection against similar vulnerabilities.