CVE-2026-15133
Use-after-free in Chrome InterestGroups allows sandboxed remote code execution.
Is CVE-2026-15133 being exploited?
Not confirmed. CVE-2026-15133 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 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-15133?
CVE-2026-15133 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-2026-15133?
Yes. A fix has been recorded for CVE-2026-15133. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-15133 affect?
CVE-2026-15133 affects Google Chrome <150.0.7871.115, Chromium-based browsers (potentially), Desktop OS: Windows/macOS/Linux. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-15133?
Update Chrome to 150.0.7871.115 or later immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via crafted HTML in Chrome; attacker can run arbitrary code inside the browser sandbox.
Patch when possible
- affected< 150.0.7871.115
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.