Remote RCE in Google Chrome, a ubiquitous browser used across organizations. Exploitable via crafted web content and can lead to widespread compromise if unpatched.
CVE-2026-118357
Use-after-free in Chrome FileSystem allows sandboxed code execution via crafted HTML
Is CVE-2026-118357 being exploited?
Not confirmed. CVE-2026-118357 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-2026-118357?
CVE-2026-118357 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-2026-118357?
Yes. A fix has been recorded for CVE-2026-118357. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-118357 affect?
CVE-2026-118357 affects Google Chrome prior to 156.0.8078.73, Windows (desktop), macOS, Linux. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-118357?
Update Chrome to 156.0.8078.73 or later immediately; apply enterprise updates.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote arbitrary code execution inside the Chrome sandbox via a crafted HTML page; attacker can run code or crash the browser.
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.