How severe is CVE-2023-6345?

CVE-2023-6345 has a CVSS 3.1 base score of 9.6 (CRITICAL). EPSS estimates a 16.5% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2023-6345: Google Skia Integer Overflow Vulnerability

CISA Known Exploited Vulnerabilities

Google Skia Integer Overflow Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-11-30

Remediation due

2023-12-21

Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA notes
This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://chromereleases.googleblog.com/2023/11/stable-channel-update-for-desktop_28.html ; https://nvd.nist.gov/vuln/detail/CVE-2023-6345

Description

Integer overflow in Skia in Google Chrome prior to 119.0.6045.199 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

Severity

CVSS 3.1 · CISA9.6 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Exploitation Context

as of October 17, 2026

All KEV statistics→

CISA added CVE-2023-6345 to the KEV catalog 1 day after its CVE record was published. The median for entries added in 2023 is 12 days.
It is one of 75 Google entries in the CISA KEV catalog, and one of 7 added in 2023.
Its current EPSS score (16.5%) is higher than that of 32% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Google	Google Chrome	119.0.6045.199 to <119.0.6045.199

References

7 Links

Other references

Record Details

Published

2023-11-29

Last updated

2025-10-21

Assigner (CNA)

Chrome

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.