RCE in the widely deployed Google Chrome PDFium renderer affects large numbers of endpoints and requires org-wide patching.
CVE-2026-118345
PDFium use-after-free in Chrome allows remote code execution via crafted HTML.
Is CVE-2026-118345 being exploited?
Not confirmed. CVE-2026-118345 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-2026-118345?
CVE-2026-118345 is rated High with a CVSS score of 8.8. 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-2026-118345?
Yes. A fix has been recorded for CVE-2026-118345. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-118345 affect?
CVE-2026-118345 affects Google Chrome for Desktop <156.0.8078.73, PDFium renderer component, Chromium-based browsers using PDFium. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-118345?
Upgrade 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.
Remote arbitrary code execution in Chrome's renderer sandbox via a crafted HTML page, enabling endpoint compromise and data access.
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.