Remote code execution in Google Chrome, a ubiquitous browser; exploitation could lead to broad endpoint compromise and is newsworthy across IT/security communities.
CVE-2026-118342
Chrome OOB write enables remote code execution via crafted HTML.
Is CVE-2026-118342 being exploited?
Not confirmed. CVE-2026-118342 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-118342?
CVE-2026-118342 is rated Critical with a CVSS score of 9.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-118342?
Yes. A fix has been recorded for CVE-2026-118342. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-118342 affect?
CVE-2026-118342 affects Google Chrome prior to 156.0.8078.73 (Desktop). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-118342?
Update Chrome to 156.0.8078.73 or later immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Out-of-bounds write allows remote code execution outside Chrome sandbox, enabling arbitrary code execution and full system compromise via a crafted page.
Immediate action required
- affected< 156.0.8078.73
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.