How severe is CVE-2018-6103?

CVE-2018-6103 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-6103 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6103?

CVE-2018-6103 primarily affects Google Chrome. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-6103?

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

When was CVE-2018-6103 published?

CVE-2018-6103 was published on 2018-12-04 and last updated on 2026-06-17.

CVE-2018-6103

CVE-2018-6103 is a medium-severity vulnerability in Google Chrome with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Google Chrome
Published: 2018-12-04
Last modified: 2026-06-17

Description

A stagnant permission prompt in Prompts in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to bypass permission policy via a crafted HTML page.

Frequently asked questions

What is CVE-2018-6103?: A stagnant permission prompt in Prompts in Google Chrome prior to 66.0.3359.117 allowed a remote attacker to bypass permission policy via a crafted HTML page.
How severe is CVE-2018-6103?: CVE-2018-6103 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-6103 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6103?: CVE-2018-6103 primarily affects Google Chrome. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-6103?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-6103 published?: CVE-2018-6103 was published on 2018-12-04 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:redhat:linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:linux_workstation:6.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

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