How severe is CVE-2016-5174?

CVE-2016-5174 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 none, and availability high.

Is CVE-2016-5174 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-5174?

CVE-2016-5174 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-5174?

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

When was CVE-2016-5174 published?

CVE-2016-5174 was published on 2016-09-25 and last updated on 2026-06-17.

CVE-2016-5174

CVE-2016-5174 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. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Google Chrome
Published: 2016-09-25
Last modified: 2026-06-17

Description

browser/ui/cocoa/browser_window_controller_private.mm in Google Chrome before 53.0.2785.113 does not process fullscreen toggle requests during a fullscreen transition, which allows remote attackers to cause a denial of service (unsuppressed popup) via a crafted web site.

Frequently asked questions

What is CVE-2016-5174?: browser/ui/cocoa/browser_window_controller_private.mm in Google Chrome before 53.0.2785.113 does not process fullscreen toggle requests during a fullscreen transition, which allows remote attackers to cause a denial of service (unsuppressed popup) via a crafted web site.
How severe is CVE-2016-5174?: CVE-2016-5174 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 none, and availability high.
Is CVE-2016-5174 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-5174?: CVE-2016-5174 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-5174?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-5174 published?: CVE-2016-5174 was published on 2016-09-25 and last updated on 2026-06-17.

References

Affected products (1)

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

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