How severe is CVE-2018-11314?

CVE-2018-11314 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-11314 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11314?

CVE-2018-11314 affects Roku Roku Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11314?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-11314 published?

CVE-2018-11314 was published on 2018-07-03 and last updated on 2026-06-17.

CVE-2018-11314

CVE-2018-11314 is a critical-severity vulnerability in Roku Roku Firmware with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
CVSS v2: 9.3
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Roku Roku Firmware
Published: 2018-07-03
Last modified: 2026-06-17

Description

The External Control API in Roku and Roku TV products allow unauthorized access via a DNS Rebind attack. This can result in remote device control and privileged device and network information to be exfiltrated by an attacker.

Frequently asked questions

What is CVE-2018-11314?: The External Control API in Roku and Roku TV products allow unauthorized access via a DNS Rebind attack. This can result in remote device control and privileged device and network information to be exfiltrated by an attacker.
How severe is CVE-2018-11314?: CVE-2018-11314 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-11314 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11314?: CVE-2018-11314 affects Roku Roku Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11314?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-11314 published?: CVE-2018-11314 was published on 2018-07-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:h:roku:roku_firmware:-:*:*:*:*:*:*:*

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