CVE-2018-6849 json
In the WebRTC component in DuckDuckGo 4.2.0, after visiting a web site that attempts to gather complete client information (such as https:/…
published 2018-04-01 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-18595
- cvss
- 4.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 28.7%
- EPSS 28.7% chance of exploitation in 30 days, percentile 98%
- public exploits
- 2
- Metasploit, Exploit-DB
Summary
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.
Patch / fix
- github.com/rapid7/metasploit-framework#9538 pull request
Timeline
- First public exploit (Metasploit auxiliary/gather/browser_lanipleak)
- Published
Exploit prediction
28.71% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit auxiliary/gather/browser_lanipleak HTTP Client LAN IP Address Gather metasploit auxiliary, normal rank, 2013-09-05
- EDB-44403 WebRTC - Private IP Leakage (Metasploit) webapps, 2018-04-05
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 4.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
github.com
/rapid7/metasploit-framework/pull/9538
issue-tracking, third-party-advisory
-
exploit-db.com
/exploits/44403/
exploit, third-party-advisory, vdb-entry
-
voidsec.com
/vpn-leak/
third-party-advisory
-
news.ycombinator.com
/item?id=16699270
third-party-advisory
-
datarift.blogspot.com
/p/private-ip-leakage-using-webrtc.html
third-party-advisory
Sources
- CVE List CVE-2018-6849
- NVD CVE-2018-6849
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.