How severe is CVE-2016-5143?

CVE-2016-5143 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-5143 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-2016-5143?

CVE-2016-5143 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-5143?

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-2016-5143 published?

CVE-2016-5143 was published on 2016-08-07 and last updated on 2026-06-17.

CVE-2016-5143

CVE-2016-5143 is a critical-severity vulnerability in Google Chrome with a CVSS 3.x base score of 9.8. 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-264.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Google Chrome
Published: 2016-08-07
Last modified: 2026-06-17

Description

The Developer Tools (aka DevTools) subsystem in Blink, as used in Google Chrome before 52.0.2743.116, mishandles the script-path hostname, remoteBase parameter, and remoteFrontendUrl parameter, which allows remote attackers to bypass intended access restrictions via a crafted URL, a different vulnerability than CVE-2016-5144.

Frequently asked questions

What is CVE-2016-5143?: The Developer Tools (aka DevTools) subsystem in Blink, as used in Google Chrome before 52.0.2743.116, mishandles the script-path hostname, remoteBase parameter, and remoteFrontendUrl parameter, which allows remote attackers to bypass intended access restrictions via a crafted URL, a different vulnerability than CVE-2016-5144.
How severe is CVE-2016-5143?: CVE-2016-5143 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-5143 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-2016-5143?: CVE-2016-5143 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-5143?: 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-2016-5143 published?: CVE-2016-5143 was published on 2016-08-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

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