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Security Digest · Vulnerability record · Known exploited

CVE-2023-4762: Google Chromium V8 Type Confusion Vulnerability

Exploited in the wild (CISA KEV). Type Confusion in V8 in Google Chrome prior to 116.0.5845.179 allowed a remote attacker to execute arbitrary code via a crafted HTML page.

CISA KEV · added 2024-02-06 CVSS 8.8 High EPSS 41.4% · p99

Updated By erroneo.us Security Desk13 references Seen in the digest for Feb 6, 2024

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 V8. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-02-06, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-02-27; treat that as the outer limit, not the target.
  • EPSS 41.4%, percentile 99: FIRST’s model estimates a 41.4% chance of exploitation activity in the next 30 days, higher than 99% 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

Type Confusion in V8 in Google Chrome prior to 116.0.5845.179 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)

CISA’s summary

Google Chromium V8 contains a type confusion vulnerability that allows a remote attacker to execute code via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Weakness type: CWE-843.

Product: Google Chromium V8 · Assigned by: Chrome · Published: 2023-09-05

Affected and fixed versions

VendorProductAffected versions (per CVE record)
GoogleChrome116.0.5845.179 < 116.0.5845.179

Severity scores

Scored byCVSSScoreVector
CISA-ADP3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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: unchanged

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 2024-02-06; federal due date 2024-02-27. 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 no, technical impact total.
  • FIRST EPSS (model of 2026-10-21): 41.38% probability of exploitation activity in the next 30 days; percentile 99.

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

  1. Listed in CISA KEV notes (chromereleases.googleblog.com) chromereleases.googleblog.com

Vulnerability records

  1. CVE.org record CVE-2023-4762 cve.org
  2. NVD entry CVE-2023-4762 nvd.nist.gov

Government

  1. CISA Known Exploited Vulnerabilities catalog entry cisa.gov

Other references from the CVE record and advisory

  1. crbug.com crbug.com
  2. debian.org debian.org
  3. lists.fedoraproject.org lists.fedoraproject.org
  4. lists.fedoraproject.org lists.fedoraproject.org
  5. lists.fedoraproject.org lists.fedoraproject.org
  6. security.gentoo.org security.gentoo.org
  7. msrc.microsoft.com msrc.microsoft.com
  8. security.gentoo.org security.gentoo.org
  9. security.gentoo.org security.gentoo.org

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