How severe is CVE-2020-16027?

CVE-2020-16027 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 high, integrity none, and availability none.

Is CVE-2020-16027 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-16027?

CVE-2020-16027 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-16027?

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

When was CVE-2020-16027 published?

CVE-2020-16027 was published on 2021-01-08 and last updated on 2026-06-17.

CVE-2020-16027

CVE-2020-16027 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Google Chrome
Published: 2021-01-08
Last modified: 2026-06-17

Description

Insufficient policy enforcement in developer tools in Google Chrome prior to 87.0.4280.66 allowed an attacker who convinced a user to install a malicious extension to obtain potentially sensitive information from the user's disk via a crafted Chrome Extension.

Frequently asked questions

What is CVE-2020-16027?: Insufficient policy enforcement in developer tools in Google Chrome prior to 87.0.4280.66 allowed an attacker who convinced a user to install a malicious extension to obtain potentially sensitive information from the user's disk via a crafted Chrome Extension.
How severe is CVE-2020-16027?: CVE-2020-16027 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 high, integrity none, and availability none.
Is CVE-2020-16027 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16027?: CVE-2020-16027 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-16027?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-16027 published?: CVE-2020-16027 was published on 2021-01-08 and last updated on 2026-06-17.

References

Affected products (1)

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

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