CVE-2025-53761 in PowerPoint
Summary
by MITRE • 08/12/2025
Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.
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Analysis
by VulDB Data Team • 08/16/2025
The vulnerability identified as CVE-2025-53761 represents a critical use-after-free flaw within Microsoft Office PowerPoint applications that enables remote code execution under specific conditions. This vulnerability occurs when PowerPoint processes malformed or specially crafted presentation files that contain improperly handled memory references. The flaw manifests during the parsing of certain slide elements or multimedia components where the application attempts to access memory locations that have already been freed or deallocated. This memory management error creates a window of opportunity for malicious actors to exploit the application's memory handling mechanisms and potentially execute arbitrary code on the targeted system.
The technical nature of this vulnerability aligns with CWE-416, which specifically addresses use-after-free conditions in software applications. This flaw typically arises from inadequate memory management practices where the application fails to properly track object lifecycles or maintain proper reference counting mechanisms. When PowerPoint encounters a malformed file structure, it may attempt to dereference a pointer that points to memory that has already been released back to the system's memory pool. This creates a scenario where an attacker can manipulate the freed memory location to inject and execute malicious code, effectively bypassing standard security controls. The vulnerability exists across multiple versions of PowerPoint and affects both desktop and mobile platforms, making it particularly concerning for enterprise environments.
The operational impact of CVE-2025-53761 extends beyond simple local code execution, as it can serve as a foundational attack vector for more sophisticated exploitation techniques. An attacker who successfully exploits this vulnerability can gain full control over the affected system, potentially leading to data exfiltration, persistence mechanisms, or further lateral movement within a network. The attack typically requires social engineering to convince a user to open a malicious PowerPoint file, making it particularly dangerous in targeted phishing campaigns. This vulnerability maps to several ATT&CK techniques including initial access through malicious files, execution via legitimate user processes, and privilege escalation if the application runs with elevated permissions. The exploitability of this vulnerability is enhanced by the fact that PowerPoint is widely used across organizations, making it a prime target for cybercriminals seeking broad impact.
Mitigation strategies for CVE-2025-53761 should focus on both immediate defensive measures and long-term architectural improvements. Organizations must prioritize applying Microsoft's security patches and updates as soon as they become available, while also implementing strict file validation policies for PowerPoint documents. Network-based defenses should include email filtering solutions that can detect and quarantine suspicious PowerPoint files, particularly those with non-standard extensions or embedded malicious content. Endpoint protection mechanisms should be enhanced to monitor for unusual memory access patterns or suspicious process behaviors that might indicate exploitation attempts. Security teams should also implement application whitelisting controls that restrict users from opening untrusted PowerPoint files, while maintaining detailed logging of all PowerPoint-related activities for forensic analysis. The vulnerability underscores the importance of regular security assessments and vulnerability management programs that can identify and remediate similar memory corruption issues before they can be exploited by adversaries.