How severe is CVE-2018-6849?

CVE-2018-6849 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-6849 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6849?

CVE-2018-6849 affects Duckduckgo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6849?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-6849 published?

CVE-2018-6849 was published on 2018-04-01 and last updated on 2026-06-17.

CVE-2018-6849

CVE-2018-6849 is a medium-severity vulnerability in Duckduckgo with a CVSS 3.x base score of 4.3. Its EPSS exploit-prediction score of 29% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 29% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Duckduckgo
Published: 2018-04-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-6849?: 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.
How severe is CVE-2018-6849?: CVE-2018-6849 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-6849 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 29% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6849?: CVE-2018-6849 affects Duckduckgo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6849?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-6849 published?: CVE-2018-6849 was published on 2018-04-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:duckduckgo:duckduckgo:4.2.0:*:*:*:*:*:*:*

More vulnerabilities in Duckduckgo

CVE-2021-44683 — High (CVSS 8.2): The DuckDuckGo browser 7.64.4 on iOS allows Address Bar Spoofing due to mishandling of the JavaScript window.open…
CVE-2020-15502 — High (CVSS 7.5): The DuckDuckGo application through 5.58.0 for Android, and through 7.47.1.0 for iOS, sends hostnames of visited web…

All CVEs affecting Duckduckgo →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-92960 — Critical (CVSS 10.0): vm2 before 3.11.6 fails to restrict access to os and dns builtins under the builtin: ['*'] configuration, allowing…
CVE-2026-92947 — Critical (CVSS 10.0): vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by…
CVE-2026-70478 — Critical (CVSS 10.0): Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST…
CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →