Remote code execution with sandbox escape in Chrome — a widely deployed browser on Android that can lead to broad device compromise and merits wide IT notification.
CVE-2026-118309
RCE in Chrome for Android via crafted HTML allowing sandbox escape.
Is CVE-2026-118309 being exploited?
Not confirmed. CVE-2026-118309 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-2026-118309?
CVE-2026-118309 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-2026-118309?
Yes. A fix has been recorded for CVE-2026-118309. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-118309 affect?
CVE-2026-118309 affects Google Chrome for Android prior to 156.0.8078.73. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-118309?
Upgrade Chrome for Android to 156.0.8078.73 or later immediately; enforce via MDM.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can execute arbitrary code outside Chrome sandbox on Android, enabling device compromise, data theft, or persistence.
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.