CVE-2018-6608

In the WebRTC component in Opera 51.0.2830.55, after visiting a web site that attempts to gather...

4.3 Medium

In the WebRTC component in Opera 51.0.2830.55, 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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

3.24%Up 1.9 points since Apr 14, 2021

What each source reports

NVD Score used 4.3

Record: CVE-2018-6608
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-6608
Updated: 2026-11-02

EUVDEUVD-2018-18355 No score

Record: EUVD-2018-18355
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qjf3-7m2g-x594 4.3

In the WebRTC component in Opera 51.0.2830.55, after visiting a web site that attempts to gather...

Record: GHSA-qjf3-7m2g-x594
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

Affected products

opera browser

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-6608 is a medium vulnerability (CVSS 4.3) in Opera Browser, published March 28, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.24%, the 88th percentile. No source names a fixed version.