What is CVE-2022-4262?

CVE-2022-4262 is a high-severity vulnerability in Google Chrome, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 8.8/10. Published 2022-12-02.

How severe is CVE-2022-4262?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2022-4262 known to be exploited?

Yes. CVE-2022-4262 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-12-05), indicating it is being actively exploited. 17 public proof-of-concept repositories are indexed.

Vulnerability in Google Chrome

CVE-2022-4262

Type confusion in V8 in Google Chrome prior to 108.0.5359.94 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

Published 2022-12-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.235 (97.8th percentile), scored 2026-10-19.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.160 · newest: 0.235 · change: +0.075

Affected products

Google Chrome — versions unspecified

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-12-05. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-12-26.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

chromereleases.googleblog.com/2022/12/stable-channel-update-for-desktop.html (Patch, Release Notes, Vendor Advisory)
crbug.com/1394403 (Permissions Required, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2022-4262?: CVE-2022-4262 is a high-severity vulnerability in Google Chrome, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 8.8/10. Published 2022-12-02.
How severe is CVE-2022-4262?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-4262 known to be exploited?: Yes. CVE-2022-4262 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-12-05), indicating it is being actively exploited. 17 public proof-of-concept repositories are indexed.