What’s Vulnerable › Vulnerabilities

CVE-2018-6849

• Severity: medium (CVSS 4.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 28.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-04-01 · updated 2026-06-17
• Weakness: CWE-200

Description

In the WebRTC component in DuckDuckGo 4.2.0, after visiting a web site that attempts to gather complete client information (such as https://ip.voidsec.com), the browser can disclose a private IP address in a STUN request.

Affected products

• Duckduckgo: 4.2.0

References

• https://datarift.blogspot.com/p/private-ip-leakage-using-webrtc.html
• https://github.com/rapid7/metasploit-framework/pull/9538
• https://news.ycombinator.com/item?id=16699270
• https://voidsec.com/vpn-leak/
• https://www.exploit-db.com/exploits/44403/
• https://datarift.blogspot.com/p/private-ip-leakage-using-webrtc.html
• https://github.com/rapid7/metasploit-framework/pull/9538
• https://news.ycombinator.com/item?id=16699270
• https://voidsec.com/vpn-leak/
• https://www.exploit-db.com/exploits/44403/

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