CVE-2018-6608

MEDIUMNVD 4.34.3—

4.3

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.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 67.1%
KEV: Not listed

Published

March 28, 2018

Last Modified

November 21, 2024

References (10)

cve@mitrehttps://docs.google.com/spreadsheets/d/1Nm7mxfFvmdn-3Az-BtE5O0BIdbJiIAWUnkoAF_v_0ug/edit?usp=sharing
cve@mitrehttps://github.com/VoidSec/WebRTC-Leak
cve@mitrehttps://news.ycombinator.com/item?id=16699270
cve@mitrehttps://voidsec.com/vpn-leak/
cve@mitrehttps://www.bleepingcomputer.com/news/security/many-vpn-providers-leak-customers-ip-address-via-webrtc-bug/
af854a3a-2127-422b-91ae-364da2661108https://docs.google.com/spreadsheets/d/1Nm7mxfFvmdn-3Az-BtE5O0BIdbJiIAWUnkoAF_v_0ug/edit?usp=sharing
af854a3a-2127-422b-91ae-364da2661108https://github.com/VoidSec/WebRTC-Leak
af854a3a-2127-422b-91ae-364da2661108https://news.ycombinator.com/item?id=16699270
af854a3a-2127-422b-91ae-364da2661108https://voidsec.com/vpn-leak/
af854a3a-2127-422b-91ae-364da2661108https://www.bleepingcomputer.com/news/security/many-vpn-providers-leak-customers-ip-address-via-webrtc-bug/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 15:22 UTCepss_batch
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2026-06-06 13:45 UTCepss_batch
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2026-05-31 22:29 UTCepss_batch
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2026-05-27 13:38 UTCepss_batch

Frequently asked(5)

What is CVE-2018-6608?

CVE-2018-6608 is a medium vulnerability published on March 28, 2018. 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.

When was CVE-2018-6608 disclosed?

CVE-2018-6608 was first published in the National Vulnerability Database on March 28, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-6608 actively exploited?

CVE-2018-6608 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-6608?

CVE-2018-6608 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2018-6608?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-6608, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2018-6608

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-6608?

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Published

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References (10)

Frequently asked(5)

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