Chrome is globally ubiquitous; an RCE in the browser can enable system and network compromise and warrants org-wide urgent action.
CVE-2026-87638
Out-of-bounds write in Chrome Media allows remote code execution via crafted HTML.
Is CVE-2026-87638 being exploited?
Not confirmed. CVE-2026-87638 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 0.32% probability of exploitation in the next 30 days.
How severe is CVE-2026-87638?
CVE-2026-87638 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-2026-87638?
Yes. A fix has been recorded for CVE-2026-87638. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-87638 affect?
CVE-2026-87638 affects Google Chrome < 153.0.8010.36. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-87638?
Update Chrome to 153.0.8010.36+ immediately; limit untrusted HTML and use web isolation.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution outside Chrome sandbox via crafted HTML, enabling arbitrary code execution and system compromise.
Immediate action required
- affected< 153.0.8010.36
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.