Security Digest · Vulnerability record · Known exploited
CVE-2023-6345: Google Skia Integer Overflow Vulnerability
Exploited in the wild (CISA KEV). 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.
CISA KEV · added 2023-11-30 CVSS 9.6 Critical EPSS 16.5% · p97
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- 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)
CISA’s summary
Google Chromium Skia contains an integer overflow vulnerability that allows a remote attacker, who has compromised the renderer process, to potentially perform a sandbox escape via a malicious file. This vulnerability affects Google Chrome and ChromeOS, Android, Flutter, and possibly other products.
Weakness type: CWE-190.
Product: Google Chromium Skia · Assigned by: Chrome · Published: 2023-11-29
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Chrome | 119.0.6045.199 < 119.0.6045.199 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADP | 3.1 | 9.6 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: required (a user must click/open something)
- Scope: changed (can affect other components)
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- 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.
Timeline
- — CVE record published by Chrome
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- Listed in CISA KEV notes (chromereleases.googleblog.com) chromereleases.googleblog.com
Vulnerability records
- CVE.org record CVE-2023-6345 cve.org
- NVD entry CVE-2023-6345 nvd.nist.gov
Government
Other references from the CVE record and advisory
- crbug.com crbug.com
- lists.fedoraproject.org lists.fedoraproject.org
- lists.fedoraproject.org lists.fedoraproject.org
- debian.org debian.org
- lists.fedoraproject.org lists.fedoraproject.org
- security.gentoo.org security.gentoo.org
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