'.../...//' in Microsoft Office Outlook allows an authorized attacker to execute code locally.
With a CVSS score of 7.8, this vulnerability is classified as high severity. The potential for local code execution poses significant risks to organizations, particularly those utilizing the affected Microsoft products such as 365_apps and office_long_term_servicing_channel.
Risk to organizations includes unauthorized access leading to data breaches and system integrity compromise. The urgency for defenders is high, as exploitation is known to be possible and has been confirmed.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability.
Vulnerability Details
This vulnerability allows an authorized attacker to execute code locally, impacting critical confidentiality, integrity, and availability aspects of the affected systems.
The vulnerability affects Microsoft Office Outlook, specifically in the components of 365_apps and office_long_term_servicing_channel, published on June 10, 2025.
This vulnerability falls under the CWE-35 (Improper Handling of Special Elements in Input) and CWE-22 (Improper Limitation of a Pathname to a Restricted Directory).
Technical Analysis
The root cause of this vulnerability involves improper validation of input, enabling an attacker to craft a specific request that could execute unauthorized commands within the Microsoft Office Outlook environment.
The attack vector is classified as local, indicating that the attacker must have local access to the system. The attack complexity is low, requiring minimal skill to exploit this vulnerability, and it does not require user interaction.
The implications of this vulnerability are severe, with a high impact on confidentiality, integrity, and availability of the system.
Risk & Impact Analysis
Real-world deployment risk is high, particularly in environments where Microsoft Office Outlook is widely used. Attackers may leverage this vulnerability to gain unauthorized access to sensitive information.
The blast radius potential is significant, as successful exploitation could lead to further attacks within the network, compromising additional systems and data.
Organizations should address this vulnerability in their priority patch cycle to mitigate the associated risks effectively.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include Microsoft 365 Apps and Office Long Term Servicing Channel 2024. Organizations should ensure that they are running the latest versions to avoid the risks posed by this vulnerability.
Mitigation & Remediation
Organizations should apply the latest patches from Microsoft to remediate this vulnerability. For those unable to immediately patch, implementing strict access controls and monitoring can help mitigate the risks while awaiting updates.
For ongoing protection, organizations may consider employing penetration testing to uncover other vulnerabilities.
Detection Guidance
Monitoring for unusual logins and changes to system configurations can provide early indicators of potential exploitation. Organizations should also review logs for any unauthorized access attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-47176 highlights the continuing vulnerabilities present in widely used applications like Microsoft Office. This incident serves as a reminder for organizations to maintain robust security practices, including regular updates and security training.
To further enhance security posture, organizations should establish a vulnerability management program and consider employing penetration testing methodologies for proactive security measures.
Additionally, organizations can benefit from insights provided by AI security services to enhance their security frameworks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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