How severe is CVE-2023-4070?

CVE-2023-4070 has a CVSS 3.x base score of 8.1, rated high 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 none.

Is CVE-2023-4070 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4070?

CVE-2023-4070 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4070?

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

When was CVE-2023-4070 published?

CVE-2023-4070 was published on 2023-08-03 and last updated on 2026-06-17.

CVE-2023-4070

CVE-2023-4070 is a high-severity vulnerability in Google Chrome with a CVSS 3.x base score of 8.1. 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-843.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-843
Affected product: Google Chrome
Published: 2023-08-03
Last modified: 2026-06-17

Description

Type Confusion in V8 in Google Chrome prior to 115.0.5790.170 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)

Frequently asked questions

What is CVE-2023-4070?: Type Confusion in V8 in Google Chrome prior to 115.0.5790.170 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: High)
How severe is CVE-2023-4070?: CVE-2023-4070 has a CVSS 3.x base score of 8.1, rated high 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 none.
Is CVE-2023-4070 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4070?: CVE-2023-4070 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4070?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-4070 published?: CVE-2023-4070 was published on 2023-08-03 and last updated on 2026-06-17.

References

Affected products (1)

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

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