High-severity RCE in Google Chrome (widely used browser) enabling sandbox escape on Linux; broadly impactful and requires org-wide updates.
CVE-2026-76023
Chrome Linux toolkit theming sandbox escape allows renderer-originated RCE.
Is CVE-2026-76023 being exploited?
Not confirmed. CVE-2026-76023 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. EPSS currently estimates a 0.46% probability of exploitation in the next 30 days.
How severe is CVE-2026-76023?
CVE-2026-76023 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-2026-76023?
Yes. A fix has been recorded for CVE-2026-76023. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76023 affect?
CVE-2026-76023 affects Google Chrome (Linux) < 151.0.7922.173, Chromium-based browsers on Linux. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76023?
Update Chrome on Linux to 151.0.7922.173+ immediately; restrict untrusted HTML.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A compromised renderer or crafted HTML can execute arbitrary code outside Chrome's sandbox on Linux, enabling system takeover, data access, and persistence.
Immediate action required
- affected< 151.0.7922.173
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.