Skip to main content

Microsoft Outlook - Remote Code Execution (RCE)

Critical
Published: Tue Jul 08 2025 (07/08/2025, 00:00:00 UTC)
Source: Exploit-DB RSS Feed

Description

Microsoft Outlook - Remote Code Execution (RCE)

AI-Powered Analysis

AILast updated: 07/09/2025, 13:56:58 UTC

Technical Analysis

The reported security threat concerns a Remote Code Execution (RCE) vulnerability in Microsoft Outlook. RCE vulnerabilities allow an attacker to execute arbitrary code on a victim's machine remotely, potentially leading to full system compromise. Although specific affected versions are not listed, the vulnerability targets Microsoft Outlook, a widely used email client in both enterprise and personal environments. The exploit is documented in Exploit-DB with ID 52356 and includes publicly available exploit code written in Python, indicating that proof-of-concept code exists and could be leveraged by attackers to automate exploitation. The lack of patch links suggests that either a patch has not yet been released or the information was not provided. The exploit likely leverages a flaw in how Outlook processes certain inputs, such as specially crafted emails or attachments, to trigger code execution without user interaction or with minimal interaction. Given the critical severity classification, the vulnerability probably allows attackers to bypass security controls and execute code with the privileges of the logged-in user, potentially enabling data theft, malware installation, or lateral movement within networks. The absence of known exploits in the wild suggests the vulnerability is either newly disclosed or not yet widely weaponized, but the presence of exploit code increases the risk of imminent exploitation attempts.

Potential Impact

For European organizations, this RCE vulnerability in Microsoft Outlook poses a significant risk due to the widespread use of Outlook in corporate environments for email communication. Successful exploitation could lead to unauthorized access to sensitive information, disruption of business operations, and compromise of internal networks. Given the critical nature of the vulnerability, attackers could deploy ransomware, steal intellectual property, or conduct espionage activities. The impact is heightened for sectors with stringent data protection requirements, such as finance, healthcare, and government agencies, where breaches could result in regulatory penalties under GDPR and damage to reputation. Additionally, the potential for lateral movement within networks could facilitate broader attacks beyond the initially compromised endpoint. The lack of a patch at the time of disclosure increases the urgency for organizations to implement interim mitigations to protect their environments.

Mitigation Recommendations

European organizations should immediately implement the following specific measures: 1) Monitor and restrict inbound email attachments and links, employing advanced email filtering solutions that can detect and quarantine suspicious content targeting Outlook vulnerabilities. 2) Employ network segmentation to limit the spread of any compromise originating from an exploited Outlook client. 3) Enforce the principle of least privilege for user accounts to minimize the impact of code execution under compromised credentials. 4) Utilize endpoint detection and response (EDR) tools to identify anomalous behaviors indicative of exploitation attempts. 5) Educate users about the risks of opening unexpected or suspicious emails and attachments, emphasizing vigilance even with emails appearing to come from trusted sources. 6) Regularly back up critical data and verify the integrity of backups to enable recovery in case of ransomware or destructive attacks. 7) Stay alert for official patches or advisories from Microsoft and apply updates promptly once available. 8) Consider deploying application control or sandboxing technologies to restrict the execution of unauthorized code spawned by Outlook processes.

Need more detailed analysis?Get Pro

Technical Details

Edb Id
52356
Has Exploit Code
true
Code Language
python

Indicators of Compromise

Exploit Source Code

Exploit Code

Exploit code for Microsoft Outlook - Remote Code Execution (RCE)

# Titles: Microsoft Outlook - Remote Code Execution (RCE)
# Author: nu11secur1ty
# Date: 07/06/2025
# Vendor: Microsoft
# Software: https://www.microsoft.com/en-us/microsoft-365/outlook/log-in
# Reference:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47176 >
https://www.cloudflare.com/learning/security/what-is-remote-code-execution/
# CVE-2025-47176

## Description
This proof-of-concept (PoC) demonstrates the CVE-2025-47176 vulnerability
simulation. It injects a crafted mail it
... (9507 more characters)
Code Length: 10,007 characters

Threat ID: 686e74f66f40f0eb72042dde

Added to database: 7/9/2025, 1:56:06 PM

Last enriched: 7/9/2025, 1:56:58 PM

Last updated: 7/9/2025, 8:37:48 PM

Views: 3

Actions

PRO

Updates to AI analysis are available only with a Pro account. Contact root@offseq.com for access.

Please log in to the Console to use AI analysis features.

Need enhanced features?

Contact root@offseq.com for Pro access with improved analysis and higher rate limits.

Latest Threats