Microsoft Edge (Chromium-based) 135.0.7049.114/.115 - Information Disclosure
Microsoft Edge (Chromium-based) 135.0.7049.114/.115 - Information Disclosure
AI Analysis
Technical Summary
This security threat concerns an information disclosure vulnerability in Microsoft Edge, specifically the Chromium-based versions 135.0.7049.114 and 135.0.7049.115. Information disclosure vulnerabilities allow attackers to gain access to sensitive information that should otherwise be protected, potentially exposing user data, browsing history, or internal browser states. The vulnerability is categorized as a remote exploit, indicating that an attacker can trigger it without local access to the victim's machine, possibly through crafted web content or network interactions. The presence of exploit code written in Perl suggests that proof-of-concept or weaponized scripts are available, which could facilitate exploitation by attackers with moderate technical skills. Although the exact technical mechanism of the vulnerability is not detailed, the affected versions imply a flaw introduced or unpatched in these recent Edge releases. Since no patch links are provided, it is likely that a fix is either pending or not publicly disclosed yet. The lack of a CVSS score requires an independent severity assessment, but the medium severity tag indicates a moderate risk level. The exploit's remote nature and information disclosure impact make it a concern for confidentiality breaches, though it may not directly affect system integrity or availability.
Potential Impact
For European organizations, this vulnerability poses a risk primarily to confidentiality. Sensitive corporate or personal data accessed through Microsoft Edge could be exposed to unauthorized parties, potentially leading to privacy violations, intellectual property leaks, or compliance issues under regulations such as GDPR. Since Edge is widely used in enterprise and government environments across Europe, especially in countries with strong Microsoft ecosystem adoption, the risk is non-trivial. Attackers exploiting this vulnerability could target employees or officials via phishing or malicious websites to extract browsing data or session information. While the vulnerability does not appear to enable remote code execution or system compromise, the information leakage could facilitate further attacks such as social engineering or credential theft. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially given the availability of exploit code. Organizations handling sensitive or regulated data should consider this vulnerability a significant concern.
Mitigation Recommendations
European organizations should prioritize updating Microsoft Edge to the latest available version once a patch addressing this vulnerability is released. Until then, they should implement network-level protections such as web filtering to block access to untrusted or suspicious websites that could trigger the exploit. Employing endpoint detection and response (EDR) solutions to monitor unusual browser behavior or data exfiltration attempts can help detect exploitation attempts. User awareness training focused on phishing and malicious web content is critical to reduce the risk of exploitation. Additionally, organizations should audit and restrict browser extensions and plugins, as these can sometimes be leveraged to amplify information disclosure. Where possible, deploying browser isolation technologies or sandboxing can limit the impact of browser-based vulnerabilities. Finally, monitoring threat intelligence feeds for updates on this vulnerability and related exploits will enable timely response.
Affected Countries
Germany, France, United Kingdom, Netherlands, Italy, Spain, Poland, Belgium, Sweden, Ireland
Indicators of Compromise
- exploit-code: # Titles: Microsoft Edge (Chromium-based) 135.0.7049.114/.115 - Information Disclosure # Date: 08/02/2025 # Vendor: Microsoft # Software: https://www.microsoft.com/bg-bg/edge/download?form=MA13FJ # Reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49741 ## Description # CVE-2025-49741 Exploit Server **Author:** nu11secur1ty (2025) ## Overview This Python script simulates an exploit targeting a Microsoft Edge (Chromium-based) information disclosure vulnerability identified as **CVE-2025-49741**. It runs two HTTP servers concurrently: - **Malicious Server (port 8080):** Serves a crafted page that collects victim headers and simulates an internal request to the exfiltration endpoint. - **Exfiltration Endpoint (port 1337):** Receives simulated internal requests and logs headers for demonstration purposes. ## Components ### MaliciousRequestHandler - Handles HTTP GET requests on port 8080. - Logs the victim's IP address, User-Agent, and all request headers. - Sends a crafted HTTP GET request to the exfiltration server on port 1337 with spoofed headers to simulate internal communication. - Responds with an HTML page indicating that the victim's information is being sent. ### ExfilEndpoint - Handles HTTP GET requests on port 1337. - Logs all headers received, simulating data exfiltration. - Responds with a success message. ## Features - Automatically detects the local IP address to bind the servers. - Graceful shutdown on Ctrl+C (SIGINT), ensuring both servers close cleanly. - Uses `ThreadingTCPServer` for responsive handling of multiple connections. - Clear console logging for monitoring victim connections and exfiltration simulation. ## Requirements - Python 3.6+ - `requests` library (`pip install requests`) ## Usage 1. Run the script: ```bash python CVE-2025-49741.py ``` 2. The script will print the URLs where both servers are running (e.g., `http://192.168.x.x:8080` and `http://192.168.x.x:1337`). 3. Press Ctrl+C to stop both servers gracefully. ## Notes - This tool is for educational and research purposes only. - Do NOT use against systems you do not own or have explicit permission to test. - The exploit logic is simulated and does NOT perform real exploitation but mimics the vulnerability for demonstration. ## Disclaimer Use responsibly. The author is not responsible for any misuse of this software. --- **nu11secur1ty 2025** # Video: [href](https://www.youtube.com/watch?v=cWClT0Hvqac) # Source: [href]( https://github.com/nu11secur1ty/CVE-mitre/tree/main/2025/CVE-2025-49741) # Buy me a coffee if you are not ashamed: [href](https://www.paypal.com/donate/?hosted_button_id=ZPQZT5XMC5RFY) # Source download [href]( https://nu11secur1ty.github.io/DownGit/#/home?url=https://github.com/nu11secur1ty/CVE-mitre/tree/main/2025/CVE-2025-49741 ) # Time spent: 01:35:00 -- System Administrator - Infrastructure Engineer Penetration Testing Engineer Exploit developer at https://packetstormsecurity.com/ https://cve.mitre.org/index.html https://cxsecurity.com/ and https://www.exploit-db.com/ 0day Exploit DataBase https://0day.today/ home page: https://www.nu11secur1ty.com/ hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E= nu11secur1ty <http://nu11secur1ty.com/> -- System Administrator - Infrastructure Engineer Penetration Testing Engineer Exploit developer at https://packetstorm.news/ https://cve.mitre.org/index.html https://cxsecurity.com/ and https://www.exploit-db.com/ 0day Exploit DataBase https://0day.today/ home page: https://www.nu11secur1ty.com/ hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E= nu11secur1ty <http://nu11secur1ty.com/>
Microsoft Edge (Chromium-based) 135.0.7049.114/.115 - Information Disclosure
Description
Microsoft Edge (Chromium-based) 135.0.7049.114/.115 - Information Disclosure
AI-Powered Analysis
Technical Analysis
This security threat concerns an information disclosure vulnerability in Microsoft Edge, specifically the Chromium-based versions 135.0.7049.114 and 135.0.7049.115. Information disclosure vulnerabilities allow attackers to gain access to sensitive information that should otherwise be protected, potentially exposing user data, browsing history, or internal browser states. The vulnerability is categorized as a remote exploit, indicating that an attacker can trigger it without local access to the victim's machine, possibly through crafted web content or network interactions. The presence of exploit code written in Perl suggests that proof-of-concept or weaponized scripts are available, which could facilitate exploitation by attackers with moderate technical skills. Although the exact technical mechanism of the vulnerability is not detailed, the affected versions imply a flaw introduced or unpatched in these recent Edge releases. Since no patch links are provided, it is likely that a fix is either pending or not publicly disclosed yet. The lack of a CVSS score requires an independent severity assessment, but the medium severity tag indicates a moderate risk level. The exploit's remote nature and information disclosure impact make it a concern for confidentiality breaches, though it may not directly affect system integrity or availability.
Potential Impact
For European organizations, this vulnerability poses a risk primarily to confidentiality. Sensitive corporate or personal data accessed through Microsoft Edge could be exposed to unauthorized parties, potentially leading to privacy violations, intellectual property leaks, or compliance issues under regulations such as GDPR. Since Edge is widely used in enterprise and government environments across Europe, especially in countries with strong Microsoft ecosystem adoption, the risk is non-trivial. Attackers exploiting this vulnerability could target employees or officials via phishing or malicious websites to extract browsing data or session information. While the vulnerability does not appear to enable remote code execution or system compromise, the information leakage could facilitate further attacks such as social engineering or credential theft. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially given the availability of exploit code. Organizations handling sensitive or regulated data should consider this vulnerability a significant concern.
Mitigation Recommendations
European organizations should prioritize updating Microsoft Edge to the latest available version once a patch addressing this vulnerability is released. Until then, they should implement network-level protections such as web filtering to block access to untrusted or suspicious websites that could trigger the exploit. Employing endpoint detection and response (EDR) solutions to monitor unusual browser behavior or data exfiltration attempts can help detect exploitation attempts. User awareness training focused on phishing and malicious web content is critical to reduce the risk of exploitation. Additionally, organizations should audit and restrict browser extensions and plugins, as these can sometimes be leveraged to amplify information disclosure. Where possible, deploying browser isolation technologies or sandboxing can limit the impact of browser-based vulnerabilities. Finally, monitoring threat intelligence feeds for updates on this vulnerability and related exploits will enable timely response.
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Technical Details
- Edb Id
- 52389
- Has Exploit Code
- true
- Code Language
- perl
Indicators of Compromise
Exploit Source Code
Exploit code for Microsoft Edge (Chromium-based) 135.0.7049.114/.115 - Information Disclosure
# Titles: Microsoft Edge (Chromium-based) 135.0.7049.114/.115 - Information Disclosure # Date: 08/02/2025 # Vendor: Microsoft # Software: https://www.microsoft.com/bg-bg/edge/download?form=MA13FJ # Reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49741 ## Description # CVE-2025-49741 Exploit Server **Author:** nu11secur1ty (2025) ## Overview This Python script simulates an exploit targeting a Microsoft Edge (Chromium-based) information disclosure vulnerability identif... (3186 more characters)
Threat ID: 68900844ad5a09ad00dd9e06
Added to database: 8/4/2025, 1:09:24 AM
Last enriched: 8/4/2025, 1:10:49 AM
Last updated: 8/6/2025, 8:46:41 PM
Views: 10
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