---
title: "CVE-2023-6345: Google Skia Integer Overflow Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-6345/
description: "CVE-2023-6345 (Google Chromium Skia): Exploited in the wild (CISA KEV). Integer overflow in Skia in Google Chrome prior to 119.0.6045.199 allowed a remote…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-11-29
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-6345"
kev: true
cvss: 9.6
epss: 0.16468
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-6345: Google Skia Integer Overflow Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Google Chromium Skia. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2023-11-30, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2023-12-21 ; treat that as the outer limit, not the target.
- EPSS 16.5% , percentile 97: FIRST’s model estimates a 16.5% chance of exploitation activity in the next 30 days, higher than 97% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Needs a user to click or open something. Phishing makes that realistic, but it is not wormable.

## What it is

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)

## Affected products (CVE record)

- Google Chrome: 119.0.6045.199 < 119.0.6045.199

## Severity

- CISA-ADP CVSS 3.1: 9.6 `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2023-11-30; federal due date 2023-12-21. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 16.47% probability of exploitation activity in the next 30 days; percentile 97.

## Sources

- [Listed in CISA KEV notes (chromereleases.googleblog.com)](https://chromereleases.googleblog.com/2023/11/stable-channel-update-for-desktop_28.html)
- [CVE.org record CVE-2023-6345](https://www.cve.org/CVERecord?id=CVE-2023-6345)
- [NVD entry CVE-2023-6345](https://nvd.nist.gov/vuln/detail/CVE-2023-6345)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-6345)
- [crbug.com](https://crbug.com/1505053)
- [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJROPNKWW65R34J4IYGTJ7A3OBPUL4IQ/)
- [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T7ABNYMOI4ZHVCSPCNP7HQTOLGF53A2/)
- [debian.org](https://www.debian.org/security/2023/dsa-5569)
- [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C7XQNYZZA3X2LBJF57ZHKXWOMJKNLZYR/)
- [security.gentoo.org](https://security.gentoo.org/glsa/202401-34)

---
Source page: https://erroneo.us/security/cve/CVE-2023-6345/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt