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 Chromium-based browser versions 135.0.7049.114 and 135.0.7049.115. The vulnerability enables remote attackers to exploit the browser to leak sensitive information, potentially including browsing data, session tokens, or other confidential user information. The exploit is classified as remote, indicating that attackers do not require local access or physical proximity to the target system. The presence of publicly available exploit code written in Perl suggests that the vulnerability is exploitable with moderate technical skill, increasing the risk of exploitation. However, no known exploits have been observed in the wild to date, and no official patches or updates have been linked, implying that the vulnerability might be newly disclosed or under investigation. The lack of detailed technical information such as CWE identifiers or specific attack vectors limits the depth of analysis, but the medium severity rating reflects a moderate impact on confidentiality without direct impact on integrity or availability. The vulnerability likely arises from improper handling of browser data or memory, allowing unauthorized disclosure of information. Organizations relying on these Edge versions should be aware of the risk of data leakage and take proactive steps to mitigate exposure until a patch is available.
Potential Impact
For European organizations, this vulnerability poses a risk of sensitive information leakage, which can lead to privacy violations, exposure of confidential business data, and potential compliance issues under regulations like GDPR. Attackers exploiting this flaw could harvest session cookies, authentication tokens, or other browser-stored secrets, facilitating further attacks such as account takeover or lateral movement within networks. Sectors such as finance, healthcare, government, and critical infrastructure are particularly vulnerable due to the sensitive nature of their data and the widespread use of Microsoft Edge in enterprise environments. The medium severity suggests that while the impact is significant, it does not directly compromise system integrity or availability, but the confidentiality breach alone can have serious consequences including reputational damage and regulatory penalties. The remote nature of the exploit increases the attack surface, as attackers can target users over the internet without requiring physical access or user interaction.
Mitigation Recommendations
1. Immediately monitor for official Microsoft security advisories and apply patches or updates as soon as they become available for the affected Edge versions. 2. Temporarily restrict or block the use of Microsoft Edge versions 135.0.7049.114 and 135.0.7049.115 within the organization until a fix is applied. 3. Employ network-level protections such as web filtering and intrusion detection systems to detect and block exploit attempts targeting this vulnerability. 4. Educate users about the risks of using outdated browser versions and encourage regular updates. 5. Implement strict browser security policies, including disabling unnecessary extensions and enforcing secure browsing configurations. 6. Use endpoint detection and response (EDR) tools to monitor for suspicious activities related to browser exploitation. 7. Conduct internal audits to identify systems running the vulnerable Edge versions and prioritize their remediation. 8. Consider deploying browser isolation or sandboxing technologies to limit the impact of potential exploits.
Affected Countries
Germany, France, United Kingdom, Italy, Spain, Netherlands, Sweden, Belgium, Poland, 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 Chromium-based browser versions 135.0.7049.114 and 135.0.7049.115. The vulnerability enables remote attackers to exploit the browser to leak sensitive information, potentially including browsing data, session tokens, or other confidential user information. The exploit is classified as remote, indicating that attackers do not require local access or physical proximity to the target system. The presence of publicly available exploit code written in Perl suggests that the vulnerability is exploitable with moderate technical skill, increasing the risk of exploitation. However, no known exploits have been observed in the wild to date, and no official patches or updates have been linked, implying that the vulnerability might be newly disclosed or under investigation. The lack of detailed technical information such as CWE identifiers or specific attack vectors limits the depth of analysis, but the medium severity rating reflects a moderate impact on confidentiality without direct impact on integrity or availability. The vulnerability likely arises from improper handling of browser data or memory, allowing unauthorized disclosure of information. Organizations relying on these Edge versions should be aware of the risk of data leakage and take proactive steps to mitigate exposure until a patch is available.
Potential Impact
For European organizations, this vulnerability poses a risk of sensitive information leakage, which can lead to privacy violations, exposure of confidential business data, and potential compliance issues under regulations like GDPR. Attackers exploiting this flaw could harvest session cookies, authentication tokens, or other browser-stored secrets, facilitating further attacks such as account takeover or lateral movement within networks. Sectors such as finance, healthcare, government, and critical infrastructure are particularly vulnerable due to the sensitive nature of their data and the widespread use of Microsoft Edge in enterprise environments. The medium severity suggests that while the impact is significant, it does not directly compromise system integrity or availability, but the confidentiality breach alone can have serious consequences including reputational damage and regulatory penalties. The remote nature of the exploit increases the attack surface, as attackers can target users over the internet without requiring physical access or user interaction.
Mitigation Recommendations
1. Immediately monitor for official Microsoft security advisories and apply patches or updates as soon as they become available for the affected Edge versions. 2. Temporarily restrict or block the use of Microsoft Edge versions 135.0.7049.114 and 135.0.7049.115 within the organization until a fix is applied. 3. Employ network-level protections such as web filtering and intrusion detection systems to detect and block exploit attempts targeting this vulnerability. 4. Educate users about the risks of using outdated browser versions and encourage regular updates. 5. Implement strict browser security policies, including disabling unnecessary extensions and enforcing secure browsing configurations. 6. Use endpoint detection and response (EDR) tools to monitor for suspicious activities related to browser exploitation. 7. Conduct internal audits to identify systems running the vulnerable Edge versions and prioritize their remediation. 8. Consider deploying browser isolation or sandboxing technologies to limit the impact of potential exploits.
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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: 10/27/2025, 1:41:17 AM
Last updated: 11/4/2025, 2:51:08 AM
Views: 78
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